I'm seriously considering the NAD C270 stereo amps for a new system I'm putting together. I plan to audition them soon, but wanted to get some owner opinions. The few reviews I've been able to find of them are pretty good, and I've had a few dealers recommend them to me, so my view of them is good thus far. Anyone have any good/bad experiences with them? How dependable are they? Have any experience dealing with NAD on repairs? Any thoughts or suggestions are appreciated.