I have decided to purchase Bryston amps (all new SST models) for my Paradigm Reference Studio speakers and I was wondering what the best match will be. My speakers consist of a pair of Studio 100s, a Studio CC, a pair of Studio 60s and a pair of Studio ADPs. All are version 2 models. My original thought was to buy 2 9B SST models, one with 5 channels and the other with 2 channels. I recently changed my mind and I am now looking to get the 4B SST to power the Studio 100s and use a 9B SST for the remaining speakers. Is there any real need for more power in the center and 4 surrounds than what the 9B SST can provide. I understand it is rather under rated in power and each channel generally tops out over 150+ watts. Another option I guess would be a 6B SST for the Studio 100s and Studio CC and possibly a 4 channel version of the 9B SST. Any thoughts?