I feel as though I remember things a lot better when I write them down versus typing.
I originally picked up one of these pens for college and it helped a ton with staying on track in class and always having a backup of the lecture that sync'd in an animation to my notes (so i could either play the notes back, or tap at a location and begin playing back from that point).
They have various versions but I would only recommend the Echo or the Sky - the version 3 in my experience only connected to the mobile apps, so on windows/mac you were not able to view your notes (very annoying). However the Sky (Echo with wifi sync) and Echo allowed me to sync the notes to a desktop app which allowed me to export pdf's. I hope they open up PC support for the 3 but after two or so years it looks as though they will never add that as a usable platform.