My friend just bought the same exact system 2 days ago.
He bought an Onkyo 609 receiver, and I let him have a BIC sub I had laying around.
We ran the Audyssey room system built into the receiver and it sounded fantastic with movies. Music was so so in my opinion.
He was running it at -12 on the receiver and it was loud as can be.
The imaging was not what I thought it should be, but,he had the speakers a little closer together then he will when his new tv arrives tomorrow.
I use aperion audio 6T,6C,5BP, and a SVS sub in my theater room but I liked his system so much that I'm gonna pick up the ML12,ML8 center and use the ML 10 as surrounds in my kids playroom.