Yeah I don't understand it myself, but believe it or not it may be the weight which contributes to the comfort.
Also the 325's I have had the longest out of the three, so the cushions may be shaped to my ears better than the others. I try as hard as I can to never let the cushions rotate to a different position, even when I take them off the drivers, I mark them so I reinstall them in the same position, as well as L/R sides.
BTW, I'm hoping to receive the Ear+HD today, I can't get away from the front door!
Edited by joseph69 - 10/23/13 at 1:09pm