I think people (including me) sometimes get a little too hung up on the models being exactly like the real thing. I personally do not own many of the modeled effects so I can't speak to their accuracy. Some people think they are accurate, some don't, otheres are somewhere in the middle, as this thread demonstrates. I think a better way to try and think about it is use the modeled effect's original effect's sound as a starting point but maybe actually think about all of the models as new and different. Kind of like a lot of the custom pedals out there and how many are based on "classic" effect's circuits. That's how I try to think of it as I'm building patches. And if you think a particular model doesn't sound like the original and doesn't get you where you want to be, just try something else. i do this with everything in the Helix. Now, if you don't think any of them are musical or get you where you want to be, then the Helix ain't for you I guess. But you've got a reasonable size music store worth of amps and effects that would take months if not longer to squeeze every possible sound out them, so give yourself some time before you completely give up on the Helix.