Speakers for a small room

I have a pair of Canton Vento Reference 9.2 DC speakers that I have really liked in both my bedroom and a spare room about the size of your room.  They are rear ported and will need a little space behind them.  They produce a surprising amount of tight bass and are very detailed.  You can find them at accessories4less.

I've tried a number of other speakers in both rooms, Klipsch Heresy I (too "in your face" for a small space), Vienna Acoustics Grand Haydn, Monitor Audio R352s, Spendor S5E, and probably a few others I don't remember. 

I like the Canton's the best.  They are priced quite a bit lower than your budget.