"The tricky thing about this headphone is how you position the driver over your year, you need to test that for yourself to see what I mean."
Really? It seems like it is the kind of headphone that wouldn't move around much on your head. It doesn't seem like you could really do too much positioning.
I have room for movement, probably around 0.5 cm. it is not alot but enough to change the sound in an audible amount. Need to state this is not a fault but something which you can experiment for yourself, you might like it.