Glad you found something you like. My brother has Energy towers/sub combo (forget the model) and I like them as well. My M60s seem a bit more concise but the two systems are a province away o it's probably unfair to compare them directly.
By the way, most folks consider speaker "break in" a bit of a myth. With the parts used today, any break in occurs within a few seconds in it's first factory testing. At least that is what I have learned from experts who know much more than I. I think sales folks like to talk about it because they are either are not trained well or on the sneakier side, they realize that it takes a person's ears and brain a little while to settle into a new speaker and/or it might trick you into keeping them past thier easy return period.
You listening to the remasterd Beatles? I'm curious to hear more opinions on wether it's worth the investment.