After buying the BIAS FX I was really let down by the poor sound, and poor UI. I was never going to buy another Amp Sim again. Plenty of free ones out there that work just as well if not better. Well Plugin Alliance must of heard me because last week they had a killer sale on the Brainworx bx_rockrack. V1.7 So I took a chance and bought it. Loaded it up on my DAW and re-amped some guitar tracks. Wow!!! I couldn't believe how great it sounded. Plus the fact the UI is just about as simple as you can get. Plus with 4 or 5 guitar tracks going CPU usage was at a usable level. Not so with the BIAS FX, its a CPU hog! Any way V3 Just came out and they let me upgrade for only $29.00. Love it! More Great Sounds and Cabs. Great Product from Brainworx