I need your help on choosing suitable amp and cd player for my Quad 11L speakers. I'm considering NAD C320BEE, NAD 352 and CA Azur 640A amps, as well as NAD C521BEE, NAD C542 and CA Azur 640C cd players. The problem is that I dont have the opportunity to hear NAD and CA side by side and make a valid comparison. I listen mostly nu-jazz, brazil, down tempo, house My listening room has 22sqm and is rather bright (wooden floors without carpets). What would be in your opinion perfect distance between my Quad 11L and rear wall?