Hello Kim
I had a similar system - Infinity Overture 3s in the front, Infinity CC3 center, Infinity RS3s in side surround positions, Velodyne CHT 10 sub. It wasn't a bad set up - I thought it was great until I got a pair of Axiom M3Tis for my tube 2 channel system. I was stunned - couldn't believe that the Axioms sounded better than the $3,000 Composition Overture 3s. Kept running up and down 2 flights of stairs with CDs comparing the sound. I was forced to an unwanted conclusion, sold my Infinity system and replaced it with Axioms. My entire Axiom system cost much less than a single pair of Composition Overture 3s.
Please don't be offended by this post - I knew nothing about sound equipment when I bought the Infinity system - I relied on the experts at Circuit City, purchased their top-of-the-line components and ended up with a pretty good system, but not a pretty good system for the price.
I recommend you get the QS8s - prepare to be very pleased and this purchase may well start you rolling down the hill of Axiom audio bliss.