henrytimeDef 553 but I can't get shipping here for akg 553 and it's in june so yea.
Better sound on 553 BUT
if you want larger soundstage this is for you. But X1 is better
henrytimeI got the AKG 553 on the last drop and I can't say that I'm too impressed. I prefer my Philips SHP9500 over them, honestly. The main reason I am willing to give these a go. Hope that helps a little.