TWEETERMAN:
I read the thread you cited above. I have two systems: (1) 990-755 unbalanced; (2) 990-7700 balanced. In system #2 with its speakers, comparing the balanced vs unabalanced [I had the 755 there first] I have not noticed a difference.

So why am I using balanced cables in system #2? Answer: Whether or not this is cause and effect I don't know. But what I can tell you is that the hum I noticed [unbalanced] is gone...and the run between pre-pro and amp was about 24 inches.

Others may not have had this experience, however. If your budget allows I would get the 7700, which you can run either way.
HTH
_________________________
Living Room:
5.1 Surround and 4channel inline room
990/7700/6-KEF-107s/LFM1 x 2/ SMS Awaiting Trinnov
Millenium dts decoder;Digital Director
Players: Tascam CD01U/SonyCX455 x 3/DV955/BDP83
Old Sony 60" SXRD TV
Zone 2 (also liv-Room: listening to music while Mrs watches TV): Crown SL2 preamp/D40 Amp/Stax Headphones



My "Man-cave":
4 channel-only inline room. No TV (thank heaven)!!!
990/755/4-KEF 107s
Tascam CD01U/dts decoder/digital director
Alesis 16x4x2 mixer
Recorders Alesis HD24/ML9600/Crown CX844s/SonyDAT/Tascam DA38
Ham Radio Shack (KB1STH) ICOM/Yaesu/Drakes x 3