What do you guys think of getting 2 750's instead of 1 770? With 10 channels of power, could you bi-amp the front 3 speakers and then have the remaining 4 channels reserved for the rears speakers in a 7.1 configuration? It would cost $401 more than the 770 alone, and you could take your time buying the second amp. I have never owned an separate amp(s) before so if this is impossible, forgive me.