Henni, SD9 is too new for me. If were to get one, it will be after it is fully tried and all the bugs are out. Besides I got a great deal on a used SD7. SD9 costs too much since I already have a PA4X that I LOVE, and also a PA1000 that I just got for easy portability when I need it. Also SD9 is 76 notes and heavier, neither of which I want.
Plus, even though the SD7 seems to be stable now, I feel I always need a backup just in case. If it were to have a problem, only AJ could work on it as far as I know.