A short question: owning the B&W CM1 (new model) I want to pair it with a powerful amp, however I can't compare the fallow products I have in mind.
CM1 + Naim nait 5i (later + CD 5i), CM1 + Cambridge Audio 840 A or the cheapest solution: Denons PMA 1500 AE.
I know you perhaps would prefer not to, but if you could force yourself to go second hand, then your options become much wider.
For instance an MF A3.2 integrated would do a fine job indeed. Did with my B&Ws for a good long time and I'd have the same again too.
Exposure, as already mentioned, are a funky match and you could do worse than seek out a s/h Naim122x/150x. But to my ears the already sharpish Naim sound is not flattered by B&W's metal tweeters.
I think someone mentioned Creek earlier, Bloody marvellous, and plenty of current drive too.
Loads to choose from s/h. Perhaps give it some thought.
Good luck.