Sennheiser HD280 Pro. You can find them online for around $100, and they’re worth every penny. Most of the sound engineers I know use them as well. I use mine with an iPod and Apple Lossless files, and they have very deep bass and high treble extension, with way better mids than Sony V6. They’re accurate but warm enough for normal listening too. And the HD280 Pro’s don’t require a headphone amp either, though they do sound great with my portable Headroom amp.