I have the Sony DB-975 receiver, I've upgraded to a Yamaha RX-V2200 which powered my speakers much better and exhibits way more detail, this was perceived as bright compared to the Sony. So I'm suggesting an upgrade to a better receiver such as the Yamaha RX-V1500 or 2500. Once you adjust to the new sound you may be much happier with your center.
I also have the Paradigm cc 370 v3 which I have no complaints about but I was thinking of getting the 470 in hopes its tweeter would better match my Studio 100's. I can't tell you how this center compares to other brands.
Also consider upgrading your source as this can really bring out the details of movies or music. It might be a good idea to this before upgrading your receiver. Only after these improvements would I consider the speakers and you may become content with your center.