Experience with the NAD M5.......

My local dealer has given me a good deal on his demo NAD M5
SACD player. I have seen some good posts here on this player. On NAD's site they are very vague with the specs
on this player......no signal to noise ratio....output
impedance etc...How does this unit sound? I have had good luck with my old NAD stuff. I do not have any in my main system now. I know you can get a Lector, Cary CDP-1 used
Mcintosh for the list price....seems like used Ayre players are hard to find. Thoughts on the NAD MASTER
sereies cd player would be helpful.