First, there are many sites on the web offering headphone reviews, advice and sometimes sales. IMHO, one of the better no-nonsense sites for this is simply http://www.headphone.com/

After scouring several review sites and comparing results with my goals, which included a high priority for keeping fatigue low during listening for hours on end, reasonably low weight and good comfort, plus, of course, a good balance of reproduction for several purposes while being gentle on the wallet, I chose the BeyerDynamic DT231’s.