I don't have a lot of experience with headphones other than the ones I've used throughout my life.  I'm an avid listener to music of all sorts (with a heavy focus on Metal, Rock, Alternative, and Broadway).  For the past two years I've used Bose OE Headphones that were given to me as a gift. The wire attachment finally failed so I was in the market for new headphones.  After a bit of research, I decided to get the HD 280's.  My only experience with Sennheiser prior to these is with the RS-120 wireless headphones which I still use (and enjoy!) to this...