Tablet for College?

So College is starting next week and I was toying with the Idea of buying a tablet to take my notes.
While there are a lot reviews for the iPad or 10" android tablets, I have seen far to none for the 7" equivalents. The reason that interests me is because of the Nexus 7, which has an amazing price I can afford without that much thought.

My major is Chemistry, so I will have to draw more than writing blocks of text, so I will probably get a stylus to the tablet.

Any science majors, have any experience with smaller tablets?

Thanks in advance!