Let me start by saying that I am by no means an expert. I have been listening to many different speakers and have recently listened to the Definitive Power Monitor bookshelf speakers ($1,100). I was very impressed and love the 8" sub in each speaker. The other alternative is to go for less expensive monitor 450 ($630) with a 10' pressure driven sub in each bookshelf. If I was going to go with this system I would need a sub to compliment. The center also has a sub that makes for incredible sound. I know I am comparing apples and oranges but if you have any advice I would appreciate it. Has anyone listened to the Definitive speaker series? If I were going to go with Axiom I was going to get the M22ti, VP150, and the QS8 surrounds. Any comparisons? Any information would be greatly appreciated.