Hi everyone I know, I know - you're all thinking something like: WHAT?!? But As a college student, I am looking for ways to save money. One area is a laptop. I could take back my current one and get any of these that I've looked at. They are: 1) USED Black Macbook 2.0, 4GB RAM, no warranty - $500 2) Refurb Macbook Air - 1.6, 120 - $1000 3) HP dv2z ~ $800 4) Lenovo X200 or X200s - both ~1000-1200 What do you guys think?