The Marantz will work fine and sound good. The Bryston will be a great match.
i apprciate the feed back i got the MA 500's as a gift 8 years back and have not used them for 4 years now they have been in storage with my dad. I have a yamaha pre amp that is just bare bones no frills at all I cannot remember the model i got it from my sax teacher but I know he paid over 1400 for it in the early 90's so I am really waiting for my dad to send my stuff to me so I can get the speakers off my home yamaha i will look into the McCOrmack DNA 1 as well if I were to go with the bryston should I just get a single 3 NRB or would you buy both of them and run them in mono?
They are frequently on sale here, as they were hugely popular and a lot were sold. McCormack has offered a steady stream of upgrade options, so don't be surprised by varying asking prices. FYI, the input impedance varies quite a bit on various models. Generally the lower powered (though still relatively high powered) amps have a higher input impedance than the higher powered (very high power) amps. IMHO, one of the better values in audio, and a super match with Vandersteens.