Currently, I like Dynaudio for room, Tannoy for studio.
BTW, don't ditch your Advents if the woofer surrounds are holding up. They are warm, but formidable.
Keep 'em up on stands, use spilkes to isolate, keep 'em a few feet off the wall.
Little things like placement can make big differences. Draperies can change everything sometimes.
FWIW, I don't like the B&Ws, tho' I know alot of folks hear them differently that I do.