I bought some Audio Technica ESW9 and I like them, they sound great but they really clamp my head, and I can't wear them for very long. So I have been thinking of taking them back to best buy and getting the UE 6000. What I'm wondering is if they sound as good or better then the ESW9s, if they...

I've been lurking here for the past couple of days, kinda new to high end headphones and need some advise. I have been looking at 3 different headphones. 1. Sennheiser HD 598, 2. Grado SR 225i, and the Audio Technica ATH M50S/LE. I don't have an amp yet but will be getting one very soon, I use...