You might be able to find an H&K Statesman used in your price range (there are two versions, one with 4xEL84 one with 6L6's so be careful there).
BUT! Consider the Carvin Belair. 2x12, 50 watts, 4xEL84, $650 on sale ($699 normally).
http://www.carvinguitars.com/products/s ... uct=BELAIR
The don't really hold their value very well but they DO have an active "mod" community, so if the out of box sound is exactly what you want, someone probably has a tweak that will suit you. Many people seem to buy 'em with the Celestion (+$90) speakers or replace the stock speakers with something else fairly quickly. You might be able to find a used one in the $350 range.
Another possibility is the Laney VC-30 - it comes in 1x12, 2x12 and 2x10 and there are a couple up on eBay right now. If I needed one, I'd buy this one right now:
http://cgi.ebay.com/NEW-LANEY-VC30-212- ... 53df92deff