I'm looking to buy a very durable, around-ear, and preferably noise canceling headset, I don't care about the price as long as they'll last a good long time. My last headphones were the AblePlanet Clear Harmony, the ones before that were the Plantronics GameCom 777. They're made out of seemingly tough plastic, but after a while certain delicate parts wore out, with the GameCom it was the part where the earpieces move around, on the Clear Harmony it was the swivel part. I won't complain if they're stiff, heavy, or ugly as long as they don't need to be replaced within a year of use.
Also, a built-in mic would be nice, though not needed.