I have to agree re customer service - UM Australia were outstanding to deal with and very helpful with some slight abnormalities in my situation too. I don't know if all dealings go via the Melbourne office, but they certainly left an excellent impression (no pun intended).
I have wanted to hear the EX1000s for ages, but haven't yet so can't comment. The only thing I can say with 100% certainty is that isolation will be much much better with CIEMs
100% agree about isolation. I have about 98 out of 100%. I'm afraid to wear them out in public because I will not hear a thing! Great for airplanes and serious listening at home.