So I'm about to buy an external hard drive to use with Time Machine on my Macbook Pro. I carry it around to classes and on my skateboard and it scares me to think what might happen to my laptop if I fell. So, I had my eye on this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16822136174 I really only need 320 GB, because I have a 120 Gb internal and only use about 90Gb. I looked at the price of building one myself, and it seemed to be almost more expensive. Are there any cheaper options? I'm a poor student and thought I would get the opinions of these forums before hitting buy. Much thanks to anyone who can help!