For me it's YMMV on the B&W + Classe combo. I didn't like the combination at all. I prefer the Rotel + B&W combo. Equipment tested would be the ff:
Nautilus 805 on original 805 stands
RCD1072 front end
RA1062 integrated amp to power the tweeters @ 100wrms x 2
RB1080 power amp to power the midbass/woofer @ 200wrms x 2
ASW600 sealed sub to augment the bass.
The Classe CA100 is paired to Dyn Contour 1.8MKII powering it with 200wrms x 2. Different flavor than the B&W plus Classe combi.
Again...YMMV.