Audio-Technica ATH-M50x Monitor Headphones (Black) with Cleaning Kit, 6Pk Cable Ties, and Extra Warranty. They feature 45mm Neodymium drivers with copper-clad aluminum voice coils that provide an extended frequency response from 15Hz to 28kHz.
As a radio producer I've been using the Sony MDR-7506s for many years. One of the channels went out on my old set, and I opted for these in it's place, after reading many reviews. And so far, I'm very happy with them.