How about B&W DM303's and the LCR center. You can pick up all three of these speakers for Under $700 new from an authorized dealer! Dollar for dollar I think these speakers have the most accurate mids and highs on the market. I own a pair of B&W nautilus 802's, which I use in the main system, and a pair of MD302's which are in the wifes system in the bedroom. Every once in a while I steal the wife's DM302's and hook then up in the main system. I am just amazed at the sound that comes from these little speakers. The highs and mids are so clear and they image incredibly. They need to be paired with a subwoofer because there is nothing below 80 hz. Also, you might consider a pair of B&W LM1's or LM2's. I have a pair of LM1's mounted above my desk, on the wall, in my office. I use a little parasound zamp (30 watts/ch) hooked to a creative labs audigy soundboard in my computer. I find my self listening for hours while I surf the web. Again, great highs and mids and soudstaging. If your getting the impression that I am a B&W fan fanatic, then you are correct. Over the years I've owned speakers from Conrad-Johnson (synthesis LM302's, Lm200's), Vanderstein (2b's and 3C's), A/D/S (m15's), Kef(reference 3's), NEAR (50's), Mirage (m1's), and Accustat(spectra 22's and 2+2's). I have been the most satisfied with the B&W's and will be purchasing another pair when the upgrade bug hit's again.
P.S.-The DM303's and LCR use the Nautilus tweeter technology.
http://www.bwspeakers.com/