Don't just go for the remarkable, it's mainly for designers with a need for sketches. For storing, searching, etc. of notes there are better alternatives without a subscription model, for example the Supernote.
I decided to return mine and the entire process took nearly 2 months.
If you buy one, assume you will never get it repaired or return it and that you’ll either keep it forever or buy a new one even if you’re under warranty.
My experience, would not recommend. I’ve heard better things about Supernote.
Personally, the transfer-ability of the notes themselves and the ability to use it to present over video conference. I can email notes directly to others, I can OCR them to text and send to myself to then transfer to whatever I need them in on my computer, and with remote sharing I can hook it up via USB to my computer, share my screen, and have the nicest digital whiteboard for meetings I’ve ever used.
For ‘thinking process’ specifically, I think it’s the ability to have unlimited notebooks in one device. Often while writing notes for one thing I’m inspired about something else, so I can quickly switch to that notebook and jot it down.