Great speakers for a small room

I listened to the Harbeth 7ES-3's at the dealer the other day. For a smaller room I could live with these speakers. They had a similar texture as my Avalons. They were very musical and they sounded more "analog" than some others with more analytical tweaters such as the Ushers or Focals.

I'm using Linn Majik 109 in my office, which is almost exactly the same size as yours, perhaps 6 inches smaller each way. They are wonderful; supremely tuneful without a hint of excessive brightness. With the front port they are happy being very close to the wall. The double tweeter system and the low crossover to the larger tweeter clearly works superbly - they are especially good with voices and saxophones, but work well across the spectrum. They are most perfect for jazz and acoustic, but can handle large scale orchestral works very well. Rock is their weakest point, but they have better bass output than you might expect (and better than Linn's stats suggest).
I'm running them with an Onix 21s - that's a 50w amp but with plenty of current. My sources are a Naim CD5/flatcap and an LP12 - they do appreciate a good source, so I hope you've got a good DAC.

B&W CM 1 or ACI Sapphires XL Speakers

how about some Zu Essence units. supposed to work well with that much power and fits int he budget.

The Intuitive Design Summit should work very well in a room that size. I heard them in a room slightly larger than yours (maybe 11 by 13) and the sound was amazing. Tight, tuneful bass to the mid 30's; midrange and treble purity that make the word holographic seem inadequate to describe their imaging. They are at the upper limit of what you want to consider spending, but are definitely worth seeking out for an audition. I know they have put an end to the speaker merry-go-round for me. Good luck.