Same. Samsung notes.
I can remove already known / redundant/ learnt facts and ideas thereby reducing the revision time considerably
Moreover pasting pyqs in books or writing easily on the margins, this helps in PYQs where space is limited on physical paper
The only downside is that paper has is its own charms. It's what all of us have used throughout our life to learn. I'm planning to take printouts of the revision PDFs a month before the exam. Which brings another downside- you can get lost in the endless PDFs and unconsolidated files. It's something that sucked out a lot of time when panic mode starts before the d day, in my last attempt
But I'm certainly in favour of a tablet and a stylus over physical books
Ps. Hope the print out idea helps!