Well, I've got a 750 (the 755's older brother, 165W/channel), so I'll chime in and say go for the 950/755. The 755 uses the same amp components as the 770, just with two fewer channels included, so it offers the same sound as the 770. If you've already got two channels of amplification that you like and don't want to get rid of, keep 'em for the rear surrounds and go with the 755. I suspect that you'll like it.

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gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review