I listen to music a lot. Lately I find that it drains my phone battery, so I'm thinking of buying a DAP. I'm thinking of buying IEM as well, since I've been using earphone buds which comes with my phone, and it kinda sucks compared to my friend's IEM. I want to spend at most $200, but I'm confused with some options:   1. buy a cheap DAP (sansa clip+/zip) ~$55 and spend the rest for IEM (maybe Shure SE215)   2. buy ~$100 DAP (haven't found any that interests me)...