In terms of sound quality, I want to say any of the planar magnetic headphones. It's hard to beat the agility and clarity of planar magnetic with dynamic driver

In terms of sound quality, I want to say any of the planar magnetic headphones. It's hard to beat the agility and clarity of planar magnetic with dynamic drivers without spending a lot more money. But planar magnetic headphones tend to be quite heavy and bulky, and you might be willing to sacrifice planar magnetic sound quality for comfort.