This is my current setup on a small/med sized room: Paradigm 70 CT series (3.5 inch drivers) with a Energy 8 inch Sub, Panny SA-XR25. Im finding that the center channel is lacking depth. I was thinking of getting a Paradigm center possibly CC-170 (5.5 inch drivers) and moving the old center channel to the back to make a 6.1 setup. What are the pros and cons with this setup? do you think that the new center wont match well? or will the larger center overpower the other smaller surround speakers? Please let me know what you think. Thanks Derek.