Bose has the best headphones on the market. Beats are more "stylish" but not as good sound quality (still very good) Don't buy skull candy

I would also recommend Beats, a pair of solos will set you back £130 at most. Mine are brilliant, I haven't looked back since buying them :)

I'm not really the expert on that, I'm afraid. I hear lots of good things about Dre Beats, and they are right around that price. Otherwise, I always pick up a cheap pair and just replace them when they break at BestBuy or something.