Keep the Yammy and put the money to sspeakers. These Wharfedale Daimond 10.2's are a good deal. These and the PSB B-25's/B-6's would be my top 2 choices in your price range. Also consider NHT Classic 2's which are a warmer sounding speaker with very good midbass.

http://www.onecall.com/productdetails.aspx?id=29719


http://www.wildwestelectronics.net/w...-speakers.html

http://signature.crutchfield.com/S-X...Black-Ash.html

The B-6's replace the outgoing B-25's.

One thing to remember about user reviews is that speakers are so subjective. I've got Magnepans and some peolpe love them and others hate them.