My receiver (NAD T751) seems to have crapped out on me. Used to be that the right front channel would occassionally go out (only while in 5.1 mode; worked fine in 2 channel), but now the receiver just shuts itself off. I turn it on, and it turns itself off after about 5 seconds. So it seems time to buy a replacement. Here are some specifics: Price range: could go up to $750, but would like to stay less than $500. Speakers: PSB Image series Must haves: excellent music reproduction Nice to have: powered second zone to run a set of speakers in the kitchen Constraints: not NAD! Any suggestions?