It is all about a speaker sounding best to your ears or not.  I have a psb Imagine XC sitting in the basement less than a year old.   Yes, I do believe in speaker break-in......as have noticed a difference over time.
Anyway, again, let your ears believe what they hear, for what best fits.  Measurements are measurements and can the human ear grasp every measurement a speaker measures............and you can hear in music???  
