A good set of headphones

I just picked up some Audio Technica ATH-M50's that I really love; billions of times more accurate and detailed than my atrocious old Sony MDR-7506's (though that's not saying much :D), and great sound isolation. Apparently semi-open headphones are more accurate and thus better for mixing, but I had to go fully-closed for situations like sweeping a mic in front of a cab or vocalists listening to their backing track while singing. AKG is really highly regarded in the headphone world, but I went with the AT's cuz they seemed like a better bang for my buck.
 
Yeah, I definitely would've gotten the Beyers if not for the price - $150 for the ATH-M50's vs. $240 for the DT770's, I gotta be choosy with my budget!