Orange amp is a bit wonky, but the others are great, especially the Yellow and Red ones. The amount of controls and optionson the amp and overdrive sections are bigger than most amp sims. Same goes to reverb, delay and modulation sections. The cab is not IR based, apparently, except for the "ambience" parameter (I think). It sounds great and I don't find myself missing my IR's. They jammed everything into one page and they still managed to include more options/controls than most amp sims. Sound is great. I'm getting some very satisfying crunch/mid-gain tones from this.