Cambridge Audio 840a vs McIntosh MA6500.

I currently have the 840a, and am demoing a McIntosh 6500 right now. They both have a distinctly different sound, but I can't really decide which I like better. I would assume the Mc would have a much more accurate sound considering their price and their reputation. I don't know though, the treble just seems better to me on my 840, maybe I'm just used to it's sound since I've had it for so long. So far I haven't been able to justify getting the 6500 yet.

Also the speakers I am using are B&W 805s.