Which speakers where?

gmm141
gmm141 Posts: 29
edited February 2011 in Speakers
I have two pairs of LC65s that I am going to be mounting for my HT. One pair of LC65i's and one pair LC65fx's. I want to use them for surround and surround back in my 9.1. My question is which is going to sound better where? Will my setup sound better with the fx's on the surround channel or the surround backs?

I realize I could switch them back and forth, but they are a bit of a pain, and I would prefer to only do it once.

Thoughts?
Display: Panasonic 54VT25 3D Plasma
Receiver: Pioneer Elite VSX-32
BluRay: Panasonic freebee w/ TV
Fronts: Polk LSi15's
Front High: LC65i's
Center: LSiC
Surround: LC65i's
Surround Backs: LC65fx's
Sub: Old (but surprisingly not tired) Infinity