Take a look at pbnaudio.com. I can asure you they sound probably better than Krell!! Check out the tests by Tom Roberts on this site.
The new Krell Mcx 450 mono blocks that I heard are surprisingly very good. A friend of mine has been doing a comparison with some of the top amps and the new Krells have broken away from the Krell house sound. Try them out before you dismiss them. I also agree with Lamm, Rowland 302 and Klyne in the price range.