Life lesson: Whenever a product is endorsed by a celebrity, it sucks. It's all about the money. The company wants to mask the suckiness by having it endorsed, and the celebrity asks a lot of money to endorse a ****ty product that they know is **** but would endorse for said big money only.
and it's funny that every single person told you it was a bad idea to buy them and that they are horrible, yet you go buy it anyway. why bother posting here asking for advice then?
It sounds to me like he just prefers less accurate sound. A lot of people prefer headphones/speakers that make the music sound "more blended" (as my girlfriend says). That isn't my preference at all, but I understand why some people don't care to analyze the music and just want to listen, even if that comes at a cost to sound quality.
I haven't personally heard the Beats and I really have no desire to. There are many excellent headphones in that price range and I would say the Denon D2000 would be the front runner, however that wouldn't suit his application as they aren't rugged at all, rather quite fragile. And I don't agree with the suggestions for the DT770/80ohm. Personally, I think they sound like garbage (even on my system), but regardless, they aren't easy to drive without a more powerful amp. The Equation Audio models feel like you've stuck your head into a vice grip. How anyone could stand those on their head for more than 30 seconds is beyond me. The new Shure line-up sounds like a perfect match for him, but he decided to go with the Beats so the recommendations will only serve to help him in the future when and if he decided he is looking for cleaner audio.