For reference, here is the Amazon page with amazing reviews: http://www.amazon.com/Audio-Technica-ATH-M50-Professional-Monitor-Headphones/dp/B000ULAP4U/ref=sr_1_1?ie=UTF8&qid=1333642080&sr=8-1
Head-Fi reviews: http://www.head-fi.org/products/audio-technica-ath-m50s/reviews
Here is Dr. Dre rocking them over his shitty ass own brand (alright this was probably before his were released but my point stands):

I bought a pair of Beats on Black Friday, returned them a week later and ordered these on Amazon, and could not have been happier.
They are the greatest sounding pair of headphones I have ever owned, and for only $130 (the price when I bought them).
Great isolation, deep bass (not over the top like some new generation headphones), awesome range, and just overall amazing sound quality. My only complaint is a little lack of sound stage but that is not really important for headphones imo.
I know I have seen people asking about headphones here in the past, so I thought I would give my input.
If you get these YOU WILL NOT REGRET IT. They are often back ordered because they are so popular.
-----signature-----



