For best HT I can't believe you are stuck on B&W. You don't care about dynamic range, reference levels, and full range? Is this a bedroom system then? Be prepared to spend a fortune compared to what other manufacturers could give you for much, much less.
And IMO if you want the "best" HT from B&W speakers, you better buy 5 or 7 all matching speakers.
I could buy 6 qty Klipsch KLF 30's, upgrade the tweeter diaphrams with ti's, convert one of them to a center by cutting a new front baffle, and smoke nearly B&W setup. For HT you can't beat dynamics, full range, etc. I could get 6 qty KLF 30's for under $2500. Just giving a example of why B&W is a bad HT move. Your gonna have to spend Mega money for B&W's best full range models, and have to match all speakers!