Hi wcc10,
I'm running the Kef R11's (90db sensitivity) with a Rogue Cronus Magnum III (100wpc) with great results. It's really a stunning combination. So much so that I've gotten off the "upgrade train." I'm just listening to the music now.
My question is, with a room your size, why are you limiting yourself to stand mounts? Why wouldn't you prefer a full range floor stander? My room is only 11' x 13'.
As to why you havent received many responses; I don't think Kef is a particularly popular brand on this forum. Not sure why. I listened to just about every $2k - $5k speaker from every major manufacturer and found the Kef R series to be superior in every way.
Cheers,
Joe