High-end headphones

I have the Shure E3C, pretty good noise blocking ability. When I have the music on low, it drowns out most of the abient noise from my computer and some of the loud car noises outside. When I have it on medium, I can't even hear a person standing right next to me talking. If you're going to get canal phones though, remember to clean your ears out... These things get dirty after a while and the manual recommends that you clean them after every use (lol) but just keep your ears clean and you'll probably be able to have a snugger fit and you won't need to excessively wash the rubber ear pads.

Grados aren't earphones or canal phones, they are huge headphones, and I find them a bit uncomfortable and just too big. Sound quality is good, but it feels like you have two huge speakers hanging right over your ears. If anyone is in the same room with you while you have these on, they'll probably hear the same music that you do.

Jam it back in, in the dark.