But you can use off the shelf Pilot Frixion pens with all of them, including the OG Wave version (which they do still sell as one of their cheaper ones, but looks like it can only take a few erase cycles).
This looks surprisingly good. The app that does the scanning and transfer to other services has a 4.7 on the iOS App Store, so I assume it works reasonably well, and I don’t see any subscription fees whatsoever.
$20-60 for a notebook is pretty dear, but certainly cheaper than $200-300 for an e-ink tablet as long as you can get enough reuse out of them.
I had originally started with a Panda Planner (because I got a bunch of them years ago to try to get my family into the habit, but that plan didn't work, so I had them laying around). I generally liked it, but wanted to make a format custom to my workflow, and that's where the Rocketbook was going to come in. But eventually I just went with lined paper and carried that over to the Scribe.
Also of note: You can search and download "daily planner" templates on the Internet and print them to try different formats and see what works for you.