It was the Bose Quiet Comfort Head Sets. I bought these things three years ago and they are still going strong. I use them whenever I study anything, whenever I travel (which is a ton). I highly recommend them.
If anyone has any other head sets that they think are even better than these I am very keen to learn more.
I have a couple of sets from Audio Technica which are equally impressive as Bose but they cost around $125 if I remember correctly. They have paid for themselves many times on flights with screaming babies.