I don't know if it's my brain adjusting to the headphones as Thujone pointed out, but they seem to sound significantly better than when I first put them on. I can firmly say that at this moment in time I am totally in love! There seems to be something special about the planar technology. So much detail and everything just sounds so much more natural than what I'm used to with the dynamics I've tried. They also have this effortless quality with the music that feels so reassuring.
It looks like my wallet it's headed for a battering I'm afraid. Though I'm enjoying these so much that I'm thinking how much better can it get?
I've got to add that I actually like the aesthetics of the 'phone and after initial slight discomfort, these seem to somehow disappear after a while so long as you keep your head still. Tilt your head though and their weight remind you that you have half a kilo attached to you head.