Started putting together my first home theater system, so far I have a denon avr 1712 and energy cb-5 in a 2.0 setup. The cb-5s sound good but don't wow me. I'm gonna purchase my sub ( Stf-2) and center next week and am thinking about dropping the energys and going with the rti a1's and a Cai a4 center. I can get the rtia for about what I would pay for the cc-5 and another set of cb-5s. Anyone have experience with energys vs polk?