I live in Southern California, the epidemy of mainstream influence. A very, very vast majority of the kids in my high school wear Beats Studio, Beats Solo, Skullcandy Ink'd, and iBuds. Barely anything else. Also saw two kids with Beats Pro.
Anyway, from the very limited amount of Head-Fi worthy cans on campus, I've seen:
• Grado SR-80i
• Sony XB-700
• JVC XX IEMs
• A set of JVC over-ears I cannot identify.
That's it. -Sigh- I usually use my TF10s straight out of the headphone jack on my 4S, or occasionally I'll bring my M50. People have asked me: "Do those have good bass?", "What brand are those?", "Monitor headphones? Let's go, DJ!" (in regard to my M50), and my favorite... "Why didn't you buy Beats? Were they too expensive? LOL! Pay for the best, hear the best."