TBI Majestic Diamond speakers,
http://www.tbisound.com/index.aspThe MD 1 starts at $300/pair, 4.6" x 5.5" x 5.1", 2 lbs, threaded insert, rated 70 - 20,000 Hz, 87 dB/w/m, 20 watts RMS
The MDIR are $600/pair, same size/weight, threaded insert, rated 40 - 20,000 Hz, 86 dB/w/m, 25 watts RMS
Both are reported to be very placement friendly. (TBI is the very small/fast subwoofer folks.)