The HEYfold "eternal notebook" by HEYii instantly ... starting with the basic pocket set for US$45 (26% off retail price), which also includes a 0.6-mm pen, spray and cleaning cloth.

The Smart Writing Set, which includes the pen, notebook, and free accompanying app, will set you back $199 with no monthly subscription fees since everything is stored locally on your devices.

You either get a physical notebook with smart ... The Smart Writing Set from Moleskine is the one exception. It's not insanely difficult for the pen to pick up your writing; in fact, it works ...

Other impressive electronic notebooks, like the Kindle Scribe, with its included pen, impressive battery life, and compatibility with the Microsoft suite, are comparable to our top pick.

And most of the notebooks we tested had 7 mm lined ruling (close to college rule), but we note the exceptions below. Ink bleeds from the edges of letters rather than creating crisp lines.