Wireless, I do not own the M3 but thought about it. It certainly is not priced as standard NAD at 2999.00. It certainly looks and feels high end, and it is raved about by the press. So if you average everything I have said so far it certainly sounds like something to look at.
As far as what people say on the forums, they are either loving the M3 and matching M5 SACD/CD/HDCD, or have some audiophile complaint. BUT is there ever a product, that somebody on here or other forums discusses that is loved by some, and has some complaints from others ? A total opposite opinion ? That is the audio world.
But I find if you take out the extremes you can decide if something is a unit worth considering, which I believe this one is.