I recently got a job that involves a large amount of travel (flying) and I would like a set of earphones to block out the noise around me and that fit snug and comfortable. I'm looking to spend under $100, and have been looking at the Shure SE115 and Klipsch S4, but im open to anything else. I will consider spending up to $150 (like the etymotic HF2), but only if its significantly better. Ill be using this with an ipod touch, and not all my music is audiophile quality. Any new earphone suggestions or thoughts on the ones I mentioned? Thanks!