Audio Research CD-7 versus CD3-mkII

I own the CD3-mkII, which I believe is a fabulous player, especially for its reasonable cost.

Anyone have the opportunity to compare the CD7 to it, especially with the same ancillary equipment??

I welcome your detailed listening comments, as I am considering this upgrade. By the way, I listen to classic rock, r & b, and some classical music, so my tastes are all over the place.