HD 280 Pro
Used by 13 peopleamazon.com ↗

“I use Sennheiser HD 280 Pro headphones, which seem to be a good compromise of quality, price and durability.”
DJ Earworm Interview, Music producer · via Uses This 
“I have Sennheiser HD280 Pro headphones, which are "just OK" for monitoring audio on video shoots (outside noise does leak in), but they are excellent for editing video/audio in a quiet office, and great for listening to music.”
Katie Shelly Interview, Media designer (Cooper-Hewitt Labs) · via Uses This 
“For listening and signaling that I'm busy in cafes, I have Sennheiser HD 280 headphones.”
Selena Deckelmann Interview, COO (Prime Radiant), PostgreSQL contributor · via Uses This 
“I use Sennheiser HD 280 Pro headphones to listen to music while I code at work.”
Bret Taylor Interview, CTO (Facebook), co-founder (FriendFeed) · via Uses This 
“At work, I live in my Sennheiser HD 280 Pro headphones, which have nicely softened and molded to fit my head over their six-year lifespan so far.”
Marco Arment Interview, Developer (Instapaper, Tumblr) · via Uses This