I always wonder why there aren't non-proprietary outboard DSP unit. Seems like the ability to run VSTs from multiple vendors would have a serious market.
I really like it. I also have Amplitube. Part of me prefers the 'actual' amp controls like Amplitube but Bias FX sounds quite good. (For the record so does Amplitube)
This is how I use it and, to me, it's pretty great. I use it for gain-staging plugins in Studio One. As mibby said there is a mini version that you can have open on every channel, which is great. I've never really considered the accuracy. I figure since I'm only comparing the VU to other versions of the same plugin it shouldn't matter. Any one wanna explain why it might?