Ah yes I mixed up CANVAS vs. CARTA! So my other devices actually have non-CANVAS e-Ink Carta displays.
Re:New 10.3″ Waveshare E Ink Monitor
by TuringTest on Friday January 17, 2020 @03:50AM
(#22073004)
I own a reMarkable and a Boox Nova Pro with CANVAS, writing speed is the same but reMarkable's software and feel is definitely better (though I suspect a matte screen protector on the Boox would make the drag feel almost the same).
They were the first to build the technology to bring refresh times for writing near the 50ms mark, and hold the patent about it (AFAIK they license this patent to other builders who use Canvas).
[1] https://support.remarkable.com/hc/en-us/articles/36000264751...