I have in ear headphones and all that, but I am looking for some closed headphones, that i can wear on trips and stuff.

I have read a lot about the Grado SR60's, however, they aren't closed. I kind of want to just be able to hear my music.

So, my priorities are:

price
sound
closed

any suggestions? The Grado's seem so popular, I just don't know if I can do an open headphone like that.