I finished my first year a few months ago and I'll tell you, a laptop is much better. I've had both
A tablet is good because it's light and easy to carry everywhere. But taking notes on it is a HASSLE if you don't have a keyboard. Sometimes I like to have a tape recorder next to my professor just in case I miss something but even then I don't like tablets much, it just didn't help me as much as a laptop
You will be writing a lot (or typing in this case) so I would say a laptop because it's much easier to write a 10 page paper on a laptop then it is on a small tablet

. Also laptops have better memory, is more versatile, and comes in a variety of sizes. Not all laptops have to be huge and heavy to take around. Actually out of the 5 days I went to school, I only carried laptops on 2 days because the other days I had labs/math class