· What do you look for in a closed-back headphone?
First and foremost, sound quality: neutral, imaging, space, detail, etc.
Second (far second at that), ergonomics: lightweight, comfort (headband, earpads, etc.)
Lastly, design principles: Detachable cables, balanced/separate left-right channel connectors, swapable headbands/earpads/etc.
· What kind of strap/headband do you prefer?
Whatever is comfortable. I have the Ether C Flow and Shure...