I'm lukewarm to tablets in general. They are cool tech, but the niche they fill seems pretty small - and getting smaller, as phones get larger.
Tablets are great for reading and web browsing, but you can do that on your laptop or your phone, and phones are way more portable, and laptops are generally still way better for any real work that involves a lot of typing, like real internet research, typing papers, taking lots of notes, consolidating notes, any type of editing or file combining, etc.
I did use an iPad in grad school for reading and studying. I had all my textbooks and notes on it, and I also burned the powerpoints from class to PDF files and transferred those to the iPad via Dropbox. So in theory, all I needed to read or study for class was my iPad. In reality though, I found myself using my Macbook Air more much than the iPad. It's just easier to take and edit notes on, to make study outlines on, to look things up online on.
For note taking in class or while reading, the best system I found was just opening a word document in my Dropbox folder on my laptop and taking notes there. Then I could look at it and edit it later in Dropbox from any device. Much simpler to me than Evernote or OneNote or any of the others.
There were several people in my class who started out taking notes on their tablet.....by halfway through the first semester though, they had all either started bringing their laptops to class, or had spent money on a keyboard for their tablet......
For me, I'd put the money towards a nice compact laptop, if you don't already have one. A tablet can be nice to have, but it's just gravy if you already have a good computer and a good smartphone.