Hi! I bought a SGproX for some time ago, and I'm very satified. First the internal sounds: Probably one of the very very best concert piano ever sampled, great sound. And the other pianoes/EP like Stagepiano, Classic EP and Wurlitzer are great as well. Very good organs, strings and a few pads.
Master controllers:
Good as a masterkeyboard, with a total of 10 timbres, 2 int and 8 ext. 4 assignable sliders and 2 ass wheels + buttons. Could have been better with 8 sliders, but it's usually enough.
Action:
Since I have a Yamaha C-3 grand, every other action from Keyboards feel bad. The SG too. But compared to f.x. the Alesis QS8 its great. It feels a bit too "easy" to me. Could have been more heavy to play. But you'll like it.
Visit KORG homepage:
www.korg.com for more info.
yogi