I really have no idea. I know the 700 does not have aftertouch and there is a fellow synth guy that told me he hated the 700, but good enough to move to the 1000. The speakers might not be as powerful, but I'm guessing now....
You might post this on the main board and I'm sure you'll get some response.
I still have the 1000 boxed up and ready to sell. I sold on eBay to a deadbeat!
LIVE: Korg PA 3X (76) / QSCK10s / Yamaha MGO6X / EV ND96
STUDIO: Korg PA3X (76) / Adam F5s / Yamaha MG10XU / Senn HD650 / BLUE BB SL / Zoom Q8