Sean, I've listened to and auditioned BOTH the SD1 and 9000pro. BOTH are great sounding instruments, but each stronger in different areas.

I feel that the SD1's strength lies in its pop/dance grooves and its superb dynamic live sounding drums which work well with these styles. On the other hand, I personally prefer the brighter piano sound on the 9000pro, finding the SD1's acoustic piano a tad too dark for my taste, though still impressive. If sounds, not styles are your principal concern, I would steer you towards the 9000pro, or even getting the much cheaper PSR2000 ($1,000) with it's exceptional acoustic instrument sounds & capable (but not extraordinary) styles, and then purchasing a Synth (like the Motif) or other Synth Workstation, to gain the other features you said you were looking for (on your other post). Just my opinion. - Scott