What is the best speaker for a smallish room?


I currently have a wonderful EAR 890 power amp, a Klyne SK-6 pre-amp and a pair of Piquet modified Quads. It's a great combination but I'll probably need to relocate to a smaller room -- 11 x 15 or so. I am thinking about substituting the Quads with another great speaker. The quads are just great, although they move less air than I would like them to. I thought about a pair of Sonus Faber Extrema, but I believe they like large rooms. I am open to a bi-amplification solution. Thanks.
ggavetti
Thanks for the suggestions. I was also thinking about Thiel 2.4. They are not too small, but should be ok in a room like mine, don't you think?
You betcha...Thiels would work and provide better low extension with 8 inch woofer.

EAR is one of my favorite components and I think that would be a good match.
I don't know about best, but I would certainly consider Merlins if I were you.
Unfortunately whatever speaker you put in that room will not perform well without "room treatment" Can you at least put bass traps in the corners? I would seriously consider the acoustics issue before choosing any speaker for a room of that size.
yes, it's not a problem to put bass traps, although one of the two corners behind the speakers is not really a corner. The rear and right walls do not intersect at a 90 degree angle: each intersects at a 45 degree angle with a short wall segment (30 inches)