So I normally just go to school with my Sennheiser HD439s, but recently the got crushed by a 300lb man on a bus ride (kinda my fault) and I was wondering what headphones I should get. My budget it is the $100-$200 range. I really like the look and reviews of the sennheiser HD598s and I was very satisfied with sennheisers quality on the 439s, but I wanted to move up. I don't have an amp, so a suggestion for that would be great, too. I'm either listening to music (Ska, Hardcore Dubstep, Classic Rock...) in the library or on a bus, and I hate disturbing others, so could I make HD598s into closed headphones? I was also looking at some Vmoda LPs and audio-technica stuff, but I'd prefer Sennheiser. Thanks!