Speaker vs. Room Size

I recommand a pair of B&W NAUTILUS 805. It should be perfect for your room. You should be able to pick up a used pair for around $1000.

Any good speaker (probably stand mounted) that does not have bass lower than about 40 HZ should be fine. The B&W 805s would be great as Lev335 recommends. I have a pair of PSB Stratus Minis in a second system that I can also highly recommend-- not as refined as the B&Ws probably, but also less expensive.

Some years ago, I put Vand. 2Ces in a 12 X 14 room, and it was mostly a mistake. These fairly large speakers only sounded decent at low volume levels. Cheers. Craig

I, too, agree that you can't go wrong with the B&W805N, but I doubt that you will ever find them used for near $1000. I would stay away from planar speakers as they need a large room to really open up. Remember they fire front AND back.
I am a big lover of B&W speakers for many reasons. I own big B&W's but if I had your room, there is no question, I would own the 805N.
Buy them and you will be happy!
Richard

Something you might find used in your price range, Spendor SP 1/2, should be on your short list also. These "BBC" monitors have been used with great success by many, (down the road you can add a subwoofer for the sub 50Hz magic.) Good luck!

Check out the Joseph 7's.A monitor with decent bass that won't set you back as much as 805's.