+1 Eileen! I only had a T2 and T4, but I like the look and definitely the smaller footprint of the SX900 over the larger Tyros units. The on-board speakers are a major plus for me too. I was happy w/the S970, but adding the 3rd voice in right hand, the assignable buttons up front, chord looper, and USB options sure will be an upgrade for me. And the fact that Genos styles play so well on the SX, well, that's even more icing on the cake.
Now if I can just figure out how to load the audio styles....tried to back them up from my S970 but wasn't successful - need more info. But it appears to be doable to restore the Audio styles via packs?
Have fun everyone whether you're a Model "T" driver or an "X-Generation" rider!