I own a CAD-200, basically a stereo version of CAD-500MB which was favorably reviewed by 10 Audio.
http://www.10audio.com/cary_500mb.htm
there is no "best" amp out there, all are good and Cary is better than McCormack or Ayre in some areas. it's not a class D, it has very nice tone and texture like an old fashion class A/B. for the money, they can't be beat considering they are most likely newer than most Ayre or McCormack you are consider and Cary also has the convenience of both RCA & XLR inputs.
http://www.10audio.com/cary_500mb.htm
there is no "best" amp out there, all are good and Cary is better than McCormack or Ayre in some areas. it's not a class D, it has very nice tone and texture like an old fashion class A/B. for the money, they can't be beat considering they are most likely newer than most Ayre or McCormack you are consider and Cary also has the convenience of both RCA & XLR inputs.