I'm looking to buy a new pair of headphones, and I want to buy some Sennheisers In Ear Headphones. I'm not a huge audiophile so I don't want those $500 ones, lol. I don't know much about headphones, so I can't decide which ones I want out of these: CX300-II CX400-II CX380 MM 50-IP The music I listen to, is mostly prog (Between the Buried and Me, Dream Theater), bands like All That Remains, Avenged Sevenfold, Megadeth. That sort of music. Thanks!