Totally depends on your budget, but for sub-$100 I can recommend the Klipsch-Image S4 buds (I think I snagged 'em for $75). Quite nice IMO, besides that I've heard good things about the DENON AHC560R's from my friend at work. I really haven't purchased anything past that point so maybe someone else can help you out past that. Sennheiser and Shure also make some quality stuff that is worth checking out as well.