I have both iPad Air with Paperlike cover and a Boox Note 3C... and the Boox with its color eInk and Wacom pen is SO MUCH nicer to write on and read that it's really not comparable.
Also paperlike film for iPad significantly degrades the screen, making it darker and grainy. It's still a better all-around device, but its really not as good as these eInk tablets for writing.
I concur. I switched from the very first remarkable to an ipad pro with paperlike but it's very different and much less paper-like. Also, the paperlike screen protector lost lost 100% of the roughness in just a few months, and now when I write it's basically the same as writing on the glass.
Also paperlike film for iPad significantly degrades the screen, making it darker and grainy. It's still a better all-around device, but its really not as good as these eInk tablets for writing.