comments:
A paper notebook or an iPad. Taking notes on a screen is not very convenient on pretty much any electronic device. Input lag will be more or less noticeable, but it will be. Apple does probably the best pen experience possible on tablet market, my girlfriend uses it to make notes, and it's damn good. Better than this would be a paper notebook, which is also a very nice and "mind friendly" way to make notes. No need to figure anything, just take notes, draw with a pencil or a pen. Btw, there are multicolor pencils available, so you can highlight or make doodles to memorize stuff better. The synchronization might be a problem, but other than this, it's a good and cheap choice. Notifications and todo might be done with the phone if you need reminders. There's plenty of software that allows you to digitalize your notes. So, you can make your notes on site in a $20 notebook and then digitalize them, without risking loosing your $300 eink tablet.