The Best Speakers for a Small Room

I am looking for a pair of speakers for my relatively small (approximately 12x14 ft) listening/living room. I have a McCormack DNA 0.5 Deluxe power amplifer and a Meridian 506.24 CD player. I listen to a lot of different types of music, but mostly to progressive rock (Yes, ELP, King Crimson, Genesis, Gentle Giant), jam bands (Moe., Dave Matthews Band, Phish, String Cheese Incident) bluegrass, and jazz (both fusion and a lot of traditional acoustic). . . in general, very busy music. Does anyone have suggestions for speakers that would match well with my listening room size, electronics, and musical tastes? And yes, before you say it Carl, I realize that room treatment is absolutely critical and will act accordingly. I would prefer to keep the price around $1500 (new or used), but could go up to $2000 if there was something really special out there. Thanks to any and all that respond!