OK so here is the deal after trying to sell my M60s for the last 2 weeks. I have come to the conclusion I am stuck with them, so the question is do I use them as rears in a 7.1 system? Or do I get rid of my QS8s and use the M60s in my current 5.1 setup.

M80s QS8s VP150 SVS 25-31 Rotel RSX-1560