i understand it's dependent on the source, but is there a typical std. here; do either the surrounds or back surrounds get more work than the other typically? I would think the surrounds would probably get more, especially due to 5.1 being much more prominent at the moment.
Not currently having a 7.1 system, I'm not sure but I'm about to make that move from 5.1
Not currently having a 7.1 system, I'm not sure but I'm about to make that move from 5.1