FAEbGBD:
Here are two links that are to reviews of the two synths on Harmony Central. If you haven't had a chance to check them out yet, you might find them valuable.
Link for RD700
http://www.harmony-central.com/Synth/Data/Roland/RD-700-01.html Link for XV-88
http://www.harmony-central.com/Synth/Data/Roland/XV-88-01.html It sounds like you'd really dig the XV-88, but check out the reviews for yourself.
------------------
--bluesboy2003