The 867 has network audio. If the A800 does not, that could effect your decision. I would get the 867 over the 761, based on my current recollection of the differences. There's a few advantages to the 761 though - simple enough to compare those two.
I like my 867, but something seems missing. Could be simply that I am overly critical of new gear, and that it doesn't have the power that my living room system has (which is to be expected, as that system has a RX-Z7 backed up with some additional amps.)
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