I find the best way to emulate what I do playing blues guitar is to assign aftertouch to pitch bend for guitar lead sounds. It seems most natural to have the hand playing the notes that are bent to do the bending. I keep my A-50 keyboard controller (with polyphonic aftertouch) since it allows me to bend two notes at once to different degrees. It is the lack of aftertouch, more than any other factor, that would keep me from getting a PSR-2000.