I am looking to get closed-back headphones around the price range of these headphones. From what I've seen these are the 3 best options, though I might be wrong. If anybody has any other suggestions for something around $130-$150, I would like to hear it. They'd the used mostly for music and gaming, and I'd rather not buy a DAC or amp right now, but if something sounds way better with one I can buy one in the future. Also, what's the difference in audio quality between these options and the HE4xx, an open back alternative in the same price range? Thanks for any help.