Just a couple thoughts:
1) I would probably wait until you see what your school tech bundles are, normally they'll be slightly cheaper than retail and may be just what you're looking for.
2) It's probably worth waiting until laptops are released using Intel's new haswell chips. These should be available (I would guess) some time this summer. The haswell chips are probably not as revolutionary as Intel would have you believe, but it's worth waiting an extra month or two for anyways.
3) If money isn't much of a concern, I think the top PC contender is the Lenovo X1 Carbon. Aside from that, Macbook Air/Pro with Parallels is a great setup as well. (The X1, Air, Pro, will probably all be released using haswell chips this summer / early fall)