Actually, Tom, I am not sure either. I'm not sure if there really is a noticable "break in," or maybe just the fact that people become accustomed to their speakers? It *seems* to me that my speakers have mellowed (I have Paradigms as well, 2years old), but maybe it is just me that has mellowed (38 yrs old)

I also agree with Gonk. The best speaker anyone can buy is the one that sounds best to them. And that is personal experience.