Traditionally I have always been an Apple-only headphones man.
They never broke on me and always did their job.
Then I read the odd thread or two on headphones and decided the next ones I went for would be PROPER ones.
So I bought some Sennheiser ones that actually enter your ear tunnel thing, and completely block out outside noise. This alone is horrible. I nearly got splattered by a car this morning.
You can hear your footsteps louder than ever, as well as your own breathing. Also in the morning if you've recently had a shower, the little bit of water goes mental.
The bass sounds good and full, but that's the only good thing about them. After my first day of them, my ears were aching, and they don't feel great now.
I'm going back to the old style, where I can hear my music as well as other stuff around me. I'm certain that otherwise, I'll end up harmed.