B&W Speakers

stringreen is the man of the moment, another +1 here.

Rega ela?
might be a good choice. nice tight bass control in a small room.

After many listening sessions to B&W speakers (803N and 802D) I have an aversion to them. The midrange in particular is colored, a certain thickness (or the famous 'kevlar' sound) is distracting to me.

Sorry to be discouraging but that was my first though upon reading your post...

Given the size of your room, I'd recommend the 805S with a pair of REL Quake or R205 subs (yes, I said "pair" for a 12' x 14' room). While I like my Green Mountain Audio speakers better, I have owned the N805 (along with a REL Strata III) and did enjoy the combination.

Stick with the 800 series within the B&W offerings, and I'd look at the "S" or "D" speakers within the 800 family. I'd also think you'd be better off with the 805S + subs than the 804D.

...and save some money for room treatments.

I'd also recommend looking at other options other than B&W, partly because I'm not a fan but in particular because I've heard them extensively with Linn amps and I did not find the pairing to be synergistic. If you let us know what type of sound you're looking for I'm sure you'll get a bunch of good alternative suggestions, some of which will undoubtedly pair better with your Linn amps. Best of luck in your search.