I have a bunch of headphones, partially because I do home recording, but also just because I like headphones. None of them are terribly expensive, but I have some Grado SR-60s, Sennheiser HD 280 pro, AKG 240, KRK KNS 6400. Sony MDR-7502 Pro, Sony MDR10RNC plus various cheaper ones.
But my favorite right now are quite inexpensive. Koss QZ-99, big, sturdy, tight, passive noise reduction headphones. Some people say they aren't bassy enough, but I prefer not to add too much bass to the source material anyway, and they reduce noise better than my MDR10RNCs, which are fairly good. Also, for recording, they don't leak much sound either, so I don't get a lot of bleed when I am recording vocals.