upgrade from Paradigm S1's to S2's V2 series???

I have a full Paradigm Signature Series S1's, C1 and ADP1's. I have been pondering upgrading to the S2's, C3 and the ADP3's all V2 series. Is there much difference per dollar in performance to do this. I have everything hooked up to Synergistic Research Tesla series bi-wired Accelerator speaker wire and other Tesla cords. I also have a SVS PB13 Ultra subwoofer for bass and it blends perfect with the Signatures. Any comments will help