Hello. I plan to buy the iPod Touch and the Shure SE530 in-ear noise isolation headphone. The main purposes are: 1. To block out noise from people who talk loudly. (No offense but I have difficulty in concentrating on my study when I hear people talk so loudly that the entire floor can hear them.) and 2. For music and video playback while exercising. I would like to gather experience from those who have used the above two products together. From a review, I read that the SE530 tends to hiss with many portable players. I wonder if this problem exists when the SE530 is used with the iPod Touch or iPhone. Some of you are probably using these products while exercising. Do you hear your own hearbeats when you are using the SE530? Do you hear other people talking? Is it a good idea to get the Push-To-Hear Unit? Do these two products work well with each other? Thanks.