I tried a pair of 600 series bookshelves in my home before I ordered my Axioms. I'll just say this much, they sounded good in the store. There are audiophiles who frequent this board who will try to turn you away from the 600 series. Thankfully, they did this for me. You have to audition an Axiom set up before you make a decision. I don't think you will regret it.