I still want to buy NAD, but it seem like, bugs are still present in new series. So I would like your opinion about my other choices in this price range. Are these choices similar in music performance?
I have not heard of any problems with the 742, and most of the problems reported on the higher end NAD models were software problems that were largely corrected. The new 7x3 models should have those ironed out. If the 743 is enough for you, I can tell you nothing else sounds nearly as good in its price range.