Is the K2000vpr a worthwhile investment? I am a drummer(ahem) trying to write songs on a somewhat decent keyboard, and while I've been impressed with the piano sounds on the Yamaha S-80 (CS6x), I am curious as to how good they sound on the Kurzweil. I also wonder if there are any good electric piano and organ sounds available. Would any of y'all out there recommend this module for a beginner?