diff --git a/README.md b/README.md
index 1c3eb9b..0f3222f 100755
--- a/README.md
+++ b/README.md
@@ -172,6 +172,7 @@ For audio backends:
   * `flash_attn`: uses the available `flash_attn` package (including `flash_attn==1.0.9` through a funny wrapper)
   * `flash_attn_v100`: uses [ZRayZzz/flash-attention-v100](https://github.com/ZRayZzz/flash-attention-v100/)'s Flash Attention for Volta (but doesn't work currently)
   * `fused_attn`: uses an implementation using `triton` (tested on my 7900XTX and V100s), but seems to introduce errors when used to train after a while
+  * `default`: uses the naive path for hte internal implementation (used for attention-debugging purposed)
 * `transformers` Llama\*Attention implementations:
   * `eager`: default `LlamaAttention`
   * `sdpa`: integrated `LlamaSdpaAttention` attention model
@@ -337,6 +338,7 @@ Despite how lightweight it is in comparison to other TTS's I've meddled with, th
 * speakers that aren't similar to an audiobook narrator voice has similarity issues due to the majority of training used `path`-based dataloader sampling instead of `speaker`-based (or `group`-based) dataloader sampling.
   + although LoRAs help a ton for fixing results for a single voice.
   + a diverse dataset in prosidy and speaker (such as a corpus sourced from dramatic media like video games) helps a ton.
+* On my test system (7900XTX), it seems inferencing quality depends on the moon phase; I don't know if it's a matter of ROCm nuances (since I've always found it to not be up to par with actual CUDA) or `bfloat16` (due to the model being trained under `float16`+AMP) being the culprit, but your mileage *will* vary depending on the system + dtype + sampler settings.
 
 ## Notices and Citations
 
diff --git a/vall_e/config.py b/vall_e/config.py
index 9ade194..eab5d7f 100755
--- a/vall_e/config.py
+++ b/vall_e/config.py
@@ -26,6 +26,7 @@ from .utils import set_seed, prune_missing
 @dataclass()
 class BaseConfig:
 	yaml_path: str | None = None # path passed in through --yaml
+	model_path: str | None = None # path passed in through --model
 
 	@property
 	def cfg_path(self):
@@ -114,12 +115,12 @@ class BaseConfig:
 			if arg.startswith("yaml"):
 				args[i] = f'--{arg}'
 
-		parser = argparse.ArgumentParser(allow_abbrev=False)
+		parser = argparse.ArgumentParser(allow_abbrev=False, add_help=False)
 		parser.add_argument("--yaml", type=Path, default=os.environ.get('VALLE_YAML', None)) # os environ so it can be specified in a HuggingFace Space too
 		args, unknown = parser.parse_known_args(args=args)
 
 		if args.yaml:
-			return cls.from_yaml( args.yaml )			
+			return cls.from_yaml( args.yaml )
 
 		return cls(**{})
 
diff --git a/vall_e/demo.py b/vall_e/demo.py
index cef1077..9c65ebf 100644
--- a/vall_e/demo.py
+++ b/vall_e/demo.py
@@ -33,6 +33,8 @@ from .emb.qnt import decode_to_file
 from tqdm import tqdm, trange
 
 def encode(path):
+	if path is None or path.exists():
+		return ""
 	return "data:audio/wav;base64," + base64.b64encode(open(path, "rb").read()).decode('utf-8')
 
 # Would be downright sugoi if I could incorporate this with into __main__
@@ -122,7 +124,8 @@ def main():
 		comparison_kwargs["enabled"]["use_lora"] = True
 	elif args.comparison == "entropix-sampling":
 		comparison_kwargs["suffix"] = "entropix_sampling"
-		comparison_kwargs["titles"] = ["Without Entropix", "With Entropix"]		
+		comparison_kwargs["titles"] = ["Without Entropix", "With Entropix"]	
+
 		comparison_kwargs["disabled"]["entropix_sampling"] = False
 		comparison_kwargs["disabled"]["ar_temp"] = args.ar_temp
 		comparison_kwargs["disabled"]["top_k"] = args.top_k
@@ -132,17 +135,46 @@ def main():
 		comparison_kwargs["enabled"]["top_k"] = 27
 		comparison_kwargs["enabled"]["top_p"] = 0.9
 	elif args.comparison == "ar-temp":
+		current_temp = args.ar_temp
+		other_temp = 1.0
+
 		comparison_kwargs["suffix"] = "temperature"
-		comparison_kwargs["titles"] = [f"Temp: {args.ar_temp:.2f}", "Temp: 1.0"]
+		comparison_kwargs["titles"] = [f"Temp: {current_temp:.2f}", f"Temp: {other_temp:.2f}"]
 
-		comparison_kwargs["disabled"]["ar_temp"] = args.ar_temp
-		comparison_kwargs["enabled"]["ar_temp"] = 1.0
+		comparison_kwargs["disabled"]["ar_temp"] = current_temp
+		comparison_kwargs["enabled"]["ar_temp"] = other_temp
 	elif args.comparison == "input-prompt-length":
-		comparison_kwargs["suffix"] = "input_prompt_length"
-		comparison_kwargs["titles"] = [f"Prompt Length: {args.input_prompt_length:.2f}s", "Prompt Length: 6.0s"]
+		current_length = args.input_prompt_length
+		other_length = 3.0
 
-		comparison_kwargs["disabled"]["input-prompt-length"] = args.input_prompt_length
-		comparison_kwargs["enabled"]["input-prompt-length"] = 6.0
+		comparison_kwargs["suffix"] = "input_prompt_length"
+		comparison_kwargs["titles"] = [f"Prompt Length: {current_length:.2f}s", f"Prompt Length: {other_length:.2f}s"]
+
+		comparison_kwargs["disabled"]["input_prompt_length"] = current_length
+		comparison_kwargs["enabled"]["input_prompt_length"] = other_length
+	elif args.comparison == "dtype":
+		current_dtype = cfg.inference.weight_dtype
+		other_dtype = "float32"
+		
+		if current_dtype == "float16":
+			other_dtype = "bfloat16"
+		elif current_dtype == "bfloat16":
+			other_dtype = "float16"
+
+		comparison_kwargs["suffix"] = f"dtype_{other_dtype}"
+		comparison_kwargs["titles"] = [f"With {current_dtype}", f"With {other_dtype}"]
+
+		comparison_kwargs["disabled"]["dtype"] = current_dtype
+		comparison_kwargs["enabled"]["dtype"] = other_dtype
+	elif args.comparison == "amp":
+		current_amp = cfg.inference.weight_amp
+		other_amp = not current_amp
+
+		comparison_kwargs["suffix"] = f"with{'out' if not other_amp else ''}_amp"
+		comparison_kwargs["titles"] = [f"With {current_amp}", f"With {other_amp}"]
+
+		comparison_kwargs["disabled"]["amp"] = current_amp
+		comparison_kwargs["enabled"]["amp"] = other_amp
 	else:
 		raise Exception(f"Unrecognized comparison flag: {args.comparison}")
 
@@ -234,7 +266,7 @@ def main():
 			audio_samples = [ prompt, out_path ]
 			if args.comparison:
 				audio_samples += [ out_path_comparison ]
-			audio_samples += [ p for p in external_sources if p.exists() ]
+			audio_samples += [ p for p in external_sources if p.exists() else None ]
 
 			if not args.random_prompts or k == "librispeech":
 				audio_samples += [ reference ]
@@ -246,6 +278,13 @@ def main():
 
 			seed = args.seed if args.seed else int(time.time())
 
+			"""
+			# manual invocation
+			cmd = f'python3 -m vall_e --yaml="{args.yaml}" "{reference}" "{text}" --out-path={out_path}'
+			# F5
+			cmd = f'python inference-cli.py --model "F5-TTS" --ref_audio "{reference}" --gen_text "{text}" --output_dir "{out_path.parent}"'
+			"""
+
 			kwargs = dict(
 				text=text,
 				references=[prompt],
@@ -268,6 +307,14 @@ def main():
 			def safe_inference( out_path=out_path ):
 				if args.skip_existing and out_path.exists():
 					return
+				
+				# swap model config swap
+				if "dtype" in kwargs or "amp" in kwargs:
+					dtype = kwargs.pop("dtype", args.dtype)
+					amp = kwargs.pop("amp", args.amp)
+					
+					del tts
+					tts = TTS( config=args.yaml, device=args.device, dtype=dtype, amp=amp )
 				try:
 					tts.inference( out_path=out_path, **kwargs )
 				except Exception as e:
@@ -295,11 +342,11 @@ def main():
 		html = html.replace("${"+k.upper()+"_SAMPLES}", "\n".join( samples ) )
 
 		if args.comparison:
-			before, after = comparison_kwargs["titles"]
+			disabled, enabled = comparison_kwargs["titles"]
 			if args.random_prompts:
-				html = html.replace("<th>Our VALL-E</th>\n\t\t\t\t\t<th>Ground Truth</th>", f"<th>Our VALL-E ({before})</th>\n\t\t\t\t\t<th>Our VALL-E ({after})</th>")
+				html = html.replace("<th>Our VALL-E</th>\n\t\t\t\t\t<th>Ground Truth</th>", f"<th>Our VALL-E ({disabled})</th>\n\t\t\t\t\t<th>Our VALL-E ({enabled})</th>")
 			else:
-				html = html.replace("<th>Our VALL-E</th>", f"<th>Our VALL-E ({before})</th>\n\t\t\t\t\t<th>Our VALL-E ({after})</th>")
+				html = html.replace("<th>Our VALL-E</th>", f"<th>Our VALL-E ({disabled})</th>\n\t\t\t\t\t<th>Our VALL-E ({enabled})</th>")
 
 	# write demo page
 	open( args.demo_dir / args.output_filename, "w", encoding="utf-8" ).write( html )
diff --git a/vall_e/webui.py b/vall_e/webui.py
index f1b2de3..b659198 100644
--- a/vall_e/webui.py
+++ b/vall_e/webui.py
@@ -117,7 +117,7 @@ def init_tts(yaml=None, restart=False, device="cuda", dtype="auto", attention=No
 		del tts
 		tts = None
 	
-	parser = argparse.ArgumentParser(allow_abbrev=False)
+	parser = argparse.ArgumentParser(allow_abbrev=False, add_help=False)
 	parser.add_argument("--yaml", type=Path, default=os.environ.get('VALLE_YAML', yaml)) # os environ so it can be specified in a HuggingFace Space too
 	parser.add_argument("--device", type=str, default=device)
 	parser.add_argument("--amp", action="store_true")
@@ -140,7 +140,7 @@ def do_inference_tts( progress=gr.Progress(track_tqdm=True), *args, **kwargs ):
 		kwargs['min-ar-temp'] = -1
 		kwargs['min-nar-temp'] = -1
 
-	parser = argparse.ArgumentParser(allow_abbrev=False)
+	parser = argparse.ArgumentParser(allow_abbrev=False, add_help=False)
 	# I'm very sure I can procedurally generate this list
 	parser.add_argument("--text", type=str, default=kwargs["text"])
 	parser.add_argument("--task", type=str, default="tts")
@@ -226,7 +226,7 @@ def do_inference_stt( progress=gr.Progress(track_tqdm=True), *args, **kwargs ):
 	else:
 		kwargs['min-ar-temp'] = -1
 
-	parser = argparse.ArgumentParser(allow_abbrev=False)
+	parser = argparse.ArgumentParser(allow_abbrev=False, add_help=False)
 	# I'm very sure I can procedurally generate this list
 	parser.add_argument("--references", type=str, default=kwargs["reference"])
 	parser.add_argument("--language", type=str, default=kwargs["language"])