'Boox' seems to be quite good. As long as you go with an Android tablet ...
Of course the Daylight, I love that it can do pretty much anything but does come with a hefty price tag. Writing on it is very comfortable
Discussion
From my experience, Boox's responsiveness is atrocious lol. Daylight is great (switched over from a laptop and phone to using it as my primary device), but it is costly.