The RockGuy sounds good, and I feel it's a pretty faithful emulation of the hardware. I've rated lower based on my impression of the TH-U interface. RockGuy GUI is harder to read at 200% than it is at 100. I find the scroll box cumbersome and fiddly to work with.
On the upside, they give you a fair amount of amps and effects to assemble a decent sound.
Probably a buy if you're already in the TH-Universe, I suggest the demo first if you're not.
I would like to see RockGuy as VST free of the TH-U shell.
