I'm new to the forum but have been lurking for a while. I feel that the time has come to step it up from $20 earbuds to a nice pair of headphones.
The only things I really care about in a pair of headphones is that they are comfortable, durable, and less than $200. I am probably not getting an amp any time soon so bear that in mind.
Hit me with your suggestions! If you have any other questions, ask.