All you fellow MacBook Air users where do you store all of your music, movies, documents, etc. Do you use a USB Flash Drive, an SD Card, a desktop external hard drive, a portable external hard drive? The reason I ask this is I'm a new Air user and even with the upgraded 256GB SSD I don't have the space for all my music and movies. I currently have a time machine back up of all of my media from when I had a MacBook Pro but i'm missing having all of my media with me. So I'm debating buying a portable external hard drive to carry around with me when I have my MacBook Air, but is this the best choice. Give me your ideas!