I pulled the plug and ordered a pair of IE80's from Crutchfield. I used them because of the 60 day return policy just in case they needed to go back for some reason (fit, sound, etc). They arrived on Friday but I didnt get a chance to unbox and try them out till yesterday. As of now I am very happy with the sound, I am primarily using my Cowon Z2 amped with a Fiio E17 as my source and am using mostly Flac files.
Sorry to trouble you, I drive my IEs with the cowon Z2 as well, may i know do you hear much improvements using a dedicated/external amp?