Wisdom's planar-magnetic drivers are used in some very expensive speakers, and they had a pair of their LS4 floor-to-ceiling wall-mounts at CES, which sounded superb, easily one of the best at the show. (It was in the "if you have to ask" price category.) Of more interest to me was the new Insight series of in-wall speakers, which use the same technology as Wisdom's more cost-no-object offerings. The drive units start at $1250 each (P2i) and go up to $5000 (L8i). That's more my speed!