<p>Depends on your major. I have a 15" MBP and its great but I think I would have preferred the 13". My computer is great for analyzing literally thousands of lines in excel when I have it hooked up to my monitor but for non engineers, I would recommend even a 13. As far as bringing your computer to class, I only brought mine daily to an arts and sciences class about religion. I found it easier to take notes especially when the professor talks really fast. It makes organizing your notes a lot easier when finals come. That class, however, was the only class that I brought my laptop to ever. I would carry it around for use in between classes or after class if i was going to the library but again, I only used it in one class AS AN ENGINEERING MAJOR. If you have a major where you feel like you will be taking a lot of notes that don’t require drawings/graphs/diagrams/etc, then you will probably end up bringing your computer to class more often than you think. It is really up to you. In college, nobody is going to be like “wow look at that loser over there taking notes on his/her computer” if you’re the only one. Its completely your call. However you might stand out a little more than you want if you get a 17".</p>
<p>In short: 17": too big. 15": Most popular 13": what i wish I got.</p>