771 already not bad compare with 2067, 2 channels also more detail than onkyo 809
but bass sure onkyo more.
771 and 810 in 5.1 channels, the surround all very good but 810 much bass than 771,
if 810 compare with 1010, not much difference on bass in between both
i will buy 810 in future, cos c/p very good just around $6k