Mike, welcome. There's no good reason to be concerned these days about the "sound quality" of receivers. The technology is at a point where even units with a modest cost have audibly flat response from 20-20KHz and inaudibly low noise and distortion within their designed power limits. So, they all amplify transparently and there's certainly no need to "audition" them. We of course read claims to the contrary, but these collapse when put to the(blind listening)test.

The Onkyo 805 which should be out in a week or two certainly does have most of the latest features and should be plenty for your speakers in your size room. If those are the features that you want, go with it.

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Enjoy the music, not the equipment.