Thanks for all the input guys!

I broke down and bought a used RS7000 for under $500 USD. I'm still shopping for MC-909 bargains and I bought a used KC recently too (I'm too impatient waiting on the TI!). I'll be playing with the software side soon.

If I were you I wouldnt buy a 909, at least not yet. It takes some time to get to know the rs7000, and you also have a KC. With that alone you should be able to do lots.

I would keep the RS-7000. I think It?s easier to use than the MC-909 when you get to know it. And I think their almost the same if you use them only for MIDI-controlling. You loose a lot of money if you sell the RS-7000 and buy a MC-909