If you really must upgrade the Spendor Classic Series are really nice. I've owned three pairs (3/1, 7/1, and 1/2e). In your price range the 1/2e's come up fairly often. You'll want to budget for the Sound Anchor stands though. Also, check these out:
http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1248741557&/Spendor-9/1-
They have been modified but they are fantastic speakers for the money and floor standers. Spendor doesn't make them like this anymore. The cabinet was too expensive to mass produce.
http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1248741557&/Spendor-9/1-
They have been modified but they are fantastic speakers for the money and floor standers. Spendor doesn't make them like this anymore. The cabinet was too expensive to mass produce.