As someone who just spent 4 years in college I would suggest a laptop as well. They just give you so much more flexibility as to where you can work. During finals week when all the labs are crammed full and the dorms are loud and full of distractions, the ability to go into some remote corner of a library and work is worth the weight of a MPB in gold.
As for which model, I think either MB or MBP will do just fine, it just comes down to preference. To me the bigger screen and other features are worth the additional price.
As for which model, I think either MB or MBP will do just fine, it just comes down to preference. To me the bigger screen and other features are worth the additional price.