I believe in speaker burn-in. I burned in all three speakers for 48 hours with a burn-in CD before listening. I also agree that your brain can get used to a particular type of sound to some degree. I've listened to the M22ti off and on for almost 30 days now and I still prefer the sound of the M3ti in my listening room. I suggest getting both the M3ti and the M22ti and listen for yourself. It's not very expensive to return them.