Hello everyone. New here, was looking for a new pair of headphones and was directed here so was lurking the past couple days. Anyway, I am in need of some new headphones that are portable, can be driven by an iphone 3gs, ipad 3, as well as used on my pc for gaming. I mostly listen to classic rock, some metal, and a little bit of everything else, minus rap/hip hop. Having phones that are good with all genres is a plus. I do intend to bring them out and use them in public (school, etc) so isolation in the form of not letting sound out is important, I don't care about letting outside sound in. Lastly, I hope to keep them under $200, closer to around 150 or so used. Thanks in advance for any recommendations.