UDave. Forgettin' the Tyros & 2100's minutely narrower (.4 mm) key width dimension & the PSR2100's cheesy feeling action, I'm still perplexed why you had even thought a Yamaha arranger (again) might work for you, especially since (as I recall) your prefered style of playing is playing walking bass lines with your left hand (in split mode) while triggering the auto accompaniment with your right hand. Am I right on this? The fact of the matter is that Yamaha arrangers (9000pro, Tyros, and PSR2100 alike) don't support doing this. On Yamaha arranger keyboards, auto accompaniment chords (in split mode) can only be triggered from 'left' of the split point. Thus, only 'drums only' accompaniment is possible when playing left hand bass lines with auto accomp (ACMP) turned off. This setup is essentially no better than playing a along to a drum machine.

Scott