I am reall new in fact I learned of martin logan today. I was offered a fresco center channel speaker and know nothing about them. It is not a fresco I, which I think is the current model and seems to be in good shape. They want 350 for it, is that reasonable? I see on the web people use them in pairs, does it matter to use a single as a center? How old could a fresco one be? I have to decide tomorrow, so I am a little desperate and info or links area really apprecaited thanks