I've used the ASUS VivoTab Note 8 for this. The stylus on that works really well, and I *love* OneNote. I ended up selling mine (accidentally scratched my screen), but I plan on getting another one or maybe a Surface Pro as soon as I have money to spare. I was never really an artist, but I'm doing more graphics related stuff now and the pen is useful for sketching out ideas before I work on my desktop.
Samsung's Note tablets and smartphones (only the ones with S-Pen support) and the Windows tablets with Wacom or N-Trig digitzers are worth it for notes. I would never get a tablet for note taking without a stylus or pen. Extremely useful not just for writing and sketching, but also if you do take any kind of math, science, or computer class where you have to write formulas. Unless you are a fast typist or have very good shorthand, note taking without a stylus will probably be more of a distraction or pain than useful. I wouldn't try to tap or use swipe keyboards - virtual keyboards aren't very good for extended periods of taking down notes.
If you have a tablet already and don't want to purchase another one, there are styluses out there that work with regular tablets, but I'm not sure how they compare to something with an actual digitizer.
This might work well if you have an iPad.