Okay, so I've decided that my old HK receiver isn't worth fixing and I want to get another receiver rather than step up to separates because I don't have the money to do that yet. Anyway, I saw a good deal on an HK AVR525 (am I crazy for going back to HK or what?) at a local circuit city. Should I spring for an extended warranty or not? My old receiver started acting up 4 years after I bought it, so I was thinking if I had some kind of warranty after the 2 year manufacturer one, I would have been okay. Any have any experiences with these?