I am using an Onkyo 656. I just bought a used set of Paradigm Studio reference 100 V.2 speaker's to replace my Paradigm Monitor 7's. I have Paradigm mini monitors for surrounds and backs. Running 2 12 subs. I have a Paradigm CC350 center. I probable need to upgrade the center for a closer match to the Studio. I tried running Phantom Center but did not like it. Any suggestions what to look for to replace center? Depending on $$ I going to try to find used. It does not need to be Paradigm.