I have been considering replacing my energy small center channel with something a little larger, I was wondering if its really important to maintain the branding throughout all of the speakers, or can i find something similar. I audtitioned an athena center the other day and it sounded great but was wondering if it is going to throw things off, I am running a yamaha rxv750 with energy surrounds and center and some cheap towers waiting for energy c7's to go on sale. I was wondering if I could go with a new athena center and replace my cheap towers with athena loudspeakers sometime in the future.