I had an NAD receiver about 5 years ago and it gave me a ton of trouble with one of the amps. Even though it was under warranty, I had to fight with NAD to finally replace the receiver since they couldn't fix it after 3 trips to the service center and having it shipped to them. The new one has worked perfectly since and a friend is still using it. I was very dissappointed by the hassle and hoops that I had to jump through to get this thing straightened out that I vowed to never own another NAD product again. I will say that it did sound excellent.
NAD Reliability
There seems to be a global pressure to push out new electronics at ever increasing rate with most of the production being done in low cost Asian countries specially China. NAD always has been a high value company making musical components at a fraction of most of the competition. I was on the band wagon in 1979 to purchase their musical integrated classic. It seemed to last forever till giving up the ghost in this century as part of 3rd system. However, I have heard rumors that their most modern offerings are suffering less quality control and/or lower reliability. Specifically has anyone had reliability problems with their flagship M3 Integrated and if so were you satisfied with service quality and cost?