Sam, there's no "best" receiver. As usual, get the features that you want at the best price possible. Of the three that you mention, the 806 is a somewhat heavier unit with a slightly more powerful amplifier, which might not be significant in your use. Since you've already dealt with them, you're probably already aware that Accessories4less has the 806 factory refurb available for a very good price around $600.

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Enjoy the music, not the equipment.