I also have the Nautilus 805's and suggest a REL sub. They are extremely musical and keep time perfectly with the B&W's. The Strata III is not huge and is amazing. It does more than add the low frequencies, it adds dimension and realism, and goes a long way if you also decide on 5 channel sound in the future.
Small Dedicated Listening Room???
My dedicated listening room is very small (12D x 10W). Because of this I have no choice but to listen in the nearfield. I would like to know if anyone else is challenged with similar listening enviroments and advice one might have reagarding speaker placement, room treatment, tweaks, etc. Thanks...