I have an old AVR20II and the front channels have stopped working on it. The rear channels work fine though. I've asked around at a few local shops about repair costs, and just to get an estimate will cost me $40. A couple of places said that a repair like that typically costs $100, but they wouldn't know until I spent the $40. So, my question is, do I go ahead and get a new receiver, or do I invest more into this one? BTW, I've already replaced it with an AVR225, so I am not in a hurry, but I would like to set up surround in the bedroom too.