Obviously it's very dependent on how much money you want to spend, as laptop prices can range pretty wildly. What I wish I'd done is get a cheap, lightweight laptop and saved up the rest of my money to build a desktop a few years down the line. Instead I got a workhorse, which is nice, but it sucks to take it to class. It's no fun to carry it around. If you go for something like a Vaio (expensive, but awesome) or some other small laptop, toting it around campus will be much more tolerable.