Hello, I own a pair of Shure SE-535's, which I enjoy very much. However, after prolonged listening sessions they tend to make my ears hurt, the way full-sized cans don't. Thus, I would like to purchase some full-sized headphones that sound very similar to my SE-535's. Will anyone suggest to me...

Would the Nuforce HDP be a well suited Amp/DAC for the Hifiman HE-500? Any other suggestions are welcome. --Thanks

I'm looking for a usb-Amp/DAC for use with my laptop. I would like it to be small, versatile, and good sounding with a variety of different headphones; all whilst being relatively inexpensive (say maybe $400 at most). Any recommendations are appreciated. --Thanks

Has anyone used the Creative X-Fi Sound Card? If so is it a good choice for a usb amp/dac for my HE-500's? What are some better options at around the same price point?  --Thanks,

I am seeking a substantial upgrade to my Shure SRH 440's. I want a headphone that gives the impression that the artist is actually in the room with you. I want the most accurate life like reproduction, I want the sound be be very transparent, tight, and substantial, as well as smooth, laid back...