I also own a DGX300, which I do love, what I ended up doing there was editing a midi file down to bare bones, just drums, bass, maybe a little "fluff", and playing full piano along with it.

I'm finding I'm having to re edit each midi, now with the 2100 - which is taking alot of tweaking, but I think will sound 100 times better in the long run.
My hubby is still not convinced it sounds "better" than the DGX300, (both are hooked up to my2 peavy 2lx speakers) but I find the voices sooo rich.

I had a Yamaha keyboard in the early 90s, I did learn their "fingering" approach back then, but being trained as a pianist, I find that approach sometimes stifles my sound/creativity I guess.

Jill