While all NAD gear I own and have owned have been stellar in reliability and sound quality, I do hear of some of their reliability issues.
Chris, since you have had great luck with Yamaha, consider their analog line of integrated amps(A-S1000, 1100, 2000, 2100, 3000). I am really fond of the "entry level" A-S1000 which has been rock solid reliable and rock solid built at 48.5 pounds.
Bill