I haven't spent a lot of time with Pro Colorist, but I like it. In particular, I like the ease in which you can assign multiple performance parameters to the aftertouch then change the amount. The resonator-based timbre choices are refreshingly different. Of course, like the other KB synths, it doesn't have a bunch of presets to work with, though you can save presets, That keeps it from getting the highest marks; but to put it in perspective, it's a free synth. You get your money's worth regardless.