If you've been using a Sony DPT-RP1 or DPT-CP1, you should also consider the Fujitsu Quaderno Gen 2, which is the most prominent successor of the RP1/CP1. I strongly prefer my Quaderno to my Remarkable 2. Unfortunately My Deep Guide hasn't been able to get a review unit yet.
Damn! I checked the reviews of the Quaderno Gen 2: I am strongly considering this one!
The build quality of the RP1/CP1 is so good (the texture of both the screen and the back is a delight), i hope it feels the same on the Fujitsu.
The chassis is virtually the same, apart from the addition of USB-C and a relocating of the wrist strap holes to the top. I actually use the official Sony CP1 case on my A5 Quaderno Gen 2 just because I happened to find that case on clearance. The main improvements are speed-related, screen related (noticeably better contrast) and most of all, a dramatic improvement in pen feel, speed and accuracy. Also some nice functionality improvements, especially around the highlighting function. There's also now a freehand highlighter.