I have the Polk Audio XRt12 separate XM tuner and am very pleased with it. The XM signal is compressed and is not close to CD quality but, I picked up a little Scott Nixon tube DAC for a couple of hundred dollars and it made a very noticeable improvement to the sound. I would recommend this approach. Then you would open up the choice of a receiver to a much larger group. In that price range they are many quality choices if you take the XM out of the search.
