What are you going to use them for?
I've used a few of the behind the screen sets for my HP laptop, and they all end up being a hassle without pumping out much sound. I just have a set of folding sony headphones that I carry in my case that have great sound. If you do need good sound, set up some cheap labtec speakers or something (well within the price range) and carry them with you if you arent looking for ultimate portability.
edit: the headphones are the MDR-G72's. They're behind the ear and cost me $40 at Magnolia HiFi.