I have been remembering fondly the seamless sound stage I had when I was using four identical speakers (for my fronts and surrounds) and so am considering going back to that format. The problem is, I live overseas and can only receive through the USPS mailing system packages weighing 70 pounds or less, which greatly limits my options and makes new towers out of the question. I will be matching the four new speakers to a Paradigm Reference Studio center, SVS subwoofer, Parasound 1205 amp, and Anthem AVM-20 pre-pro. The speakers to be replaced are Paradigm Monitor 7.2s for the fronts and Atoms for the surrounds. Because of weight limitations, I am considering going Studio 20's all around. Does anyone have any sense of whether I will hear an improvement in my soundstage? I am a little hestitant to go from towers to bookshelf speakers without some reassurance from people who have heard both! Thanks!