Mcintosh 501's vs. 7000

Has anyone done an a/b comparison of these two? The reviewers seem to love the 501's but every one I have read has stated that transparency and retrieval of fine detail is not their strong point. I have heard the 7000 and found it very transparent, retrieving detail to a great degree. This has been backed up in the Sonic Flare review. I know the 501's have at least twice the power, great bass control, great soundstage etc. My concern lies in their ability to retrieve fine detail. I would be happy with the 7000 but I have maggie 3.6's which are in a 23' x 34' room. When the 7000 was mated to the maggies, on some tracks the 7000 did not have the necessary current to drive the maggies. Resolution is important to me. I don't want to change the speakers unless absolutely necessary.If anyone has heard both of these amps your insight would be greatly appreciated.