NAD T752 5.1 Channels Receiver

I would be very cautious when purchasing a NAD receiver. I just purchased a T752 and right out of the box I have no sub output in all modes except for 7.1 Matrix and EARS. I sound tested NAD and it sounds great, when it works. I read multiple reviews and came to the conclusion that in the early stages the 752 had a lot of bugs and the newer makes took care of the problems. When talking to the sales person about these issues he also noted there were a lot of returns on the newer makes. Ive read multiple posts about these being DOA, channels dont work, humming, hissing, popping...the list goes on. It comes with a 2 year warranty, be prepared to use it. The upgrades fix one problem but create another. I wont even use my warranty Ive had it 2 days and it will be returned for a Rotel.