I recently picked one up used and I like it so far ...
Only really have had time to preview the sounds, get familiar with the front panel. I haven't edited/programmed any of my own sounds yet.
This is a good module if you want realistic and traditional stuff ... nice pads, nice variety of keyboard-instrument sounds ... as far as "real" instruments, the piano, strings, horns are very good. It has some lead synth sounds that I think I can put to use. It also has "doo daa" and "ooh aah" voices and guitar samples, which won't be of use to me. The bass sounds and drum kits in it are reasonable, if you must use a keyboard for that; I'm very much into the real thing for stuff like that and guitars, so consider the source.
For me, the KB3 organ emulation ain't happening, but it's better than some others I've heard. But, I have
a Nord Electro which does the organ/leslie very well, I think. The Nord is also the reason why I won't be turning to the PC2 for Rhodes or Wurly sounds (although, the PC2 does not do a *bad* job on these sounds, they just don't have the grit and bite that I feel the Nord does a better job of in terms of approaching the original instruments). However, if I want that DX7-y keys sound, the PC2 has some nice ones of those.
It's got a lot of onboard effects that seem very programmable ... haven't dug that deep into yet.
I just read this over and it sounds like I don't like a lot of the sounds ... I don't want to give that impression! Depends on what you're asking of it. For me, the piano, strings, pads, horns, some percussion sounds, etc. are among the best I've heard recently. It doesn't do anything in the presets terribly. It's very good for "natural", which seems to be what you want. Roland tends to have a hype to their sounds. I never cared for Alesis QS sounds ... the only other soundset I've heard recently in this genre that interests me as much (and for some things, even more) is the Yamaha Motif/S series sound set. I'd say go to a store that deals Kurzweil, put on a pair of headphones, and play a PC2 to really decide.
But overall, I'm a happy camper ...
Does this help?