I need to replace two old Marantz floor speakers (one is blown). I have a fairly new center (Infinity CC-2) and sub (BU-120). The surrounds are also fairly new and they are installed in the ceiling. I don't recall the make (they were purchased with the house), but I know that they are NOT Infinity. Here is my question: I know the goal is to match speakers, but since I already have a bit of a "mismatch", what advice can you give me as to what I should be looking for in new mains? I prefer towers, and am on a budget ($300 to $400 for the pair). Thanks for your help!