My hi fi system consists of Rotel stereo amp RC 1070, Rotel power amp RB 1070 and Rotel cd player RCD 1072. I now need to find suitable speakers. The advice i've been given suggests that the amp should be more powerful than the speakers. The speakers i'm looking at are the Paradigm S20 at 100 watts and Paradigm S40 at 140 watts. The rotel amp pushes out 130 watts per channel. So, in theory which will be the better suited speaker?