I'm at a loss right now. I can't decide between the Onyx Boox Note, Sony DPT-CP1 (new 10" ereader coming out soon), or the reMarkable. If anyone has any experience with any of these (or the newer Sony DPT-RP1) could you please message me? Also if anyone has any other writing/reading tablet suggestions they would be greatly appreciated. An iPad or similar device would definitely fit my needs except I need it to not have internet access as a school requirement (I know some have a beta web browser but I'm just going to act like it doesn't exist because most einks don't have it). I'm really liking eink technology (I've used a Kindle Oasis for a little while now) but I keep wishing I could take notes on it and it has no support for a pen or similar. I'm worried that the reMarkable is a bad choice because of the quality control and outdated firmware, while I'm also concerned that the other two devices will have worse pen tracking than the reMarkable. My only "real" qualifications are -Has a stylus function -Preferably eInk -Can open PDFs (epub is a plus)

Expandable storage or a backlight are definitely other bonuses but not at all necessary. I'm just hoping someone with experience in one or more of these devices can help me out. Thanks!

Edit: also I should've pointed out that even though all the ones I mentioned are around 10" I'd be fine with a bigger device given it has better features.