Looking for ideas regarding an upgrade of my system. I have Martin Logan's. Motion 4's as fronts, 6 as the center and 2's in the back. I'm not unsatified ,but want to move up. I want to stay with bookshelves. I would like more clarity from a center and a larger sound stage from my fronts. Looking in $500.00-$1,000.0ea for the fronts and up to $600.00 or so for the center.