I'd never thought I'd do this but ... maybe it's time to upgrade (audio) equipment of record: HK 320 PSB Alpha Bs (bookshelves for fronts and surrounds) PSB Alpha C (center channel) Paradigm PW 2200 I'm thinking of moving up to some Paradigm Reference stuff for the front 3 speakers at least. My question is -- is there really much difference between the Studio 20 and 40, especially considering that I have a decent subwoofer? My thoughts are this: the biggest differences, performancewise, between the 40 and the 20 are: 1) bass extension 2) sensitivity. I demoed the 20s and was surprised with their bass extension; the dealer didn't have 40s available. However, my receiver is rated at 55 odd watts, and I'm concerned about the 20s' 86 dB anechoic sensitivity. So, what do you all think? There seem to be dozens of threads contrasting the 40 and 60 but none really for the 40 and 20. Thoughts would be appreciated!