I second the Beyerdynamic DT770 Pros. I've been using them for the past 3 years in the workplace and they work wonders. If you really want to go overboard with

I second the Beyerdynamic DT770 Pros. I've been using them for the past 3 years in the workplace and they work wonders. If you really want to go overboard with them, and care about excellent sound quality, I suggest getting a DAC and tube eventually.