My Astak (vizplex) with the tint, you mention beats/meats most NEW paperbacks (which never have WHITE paper)
My K4NT (e-ink pearl) exceeds those.
Digging into my Dead Tree paperback library and many pages have Yellowed, making scanning difficult due to
loss of contrast.
I can read e-ink in the brightest sun. I can turn on the Light when needed, just like I would for reading a paper book.
Forget seeing anything on the screen of my phone or tablet in any lighting OVER basic office/stoe levels. Totally washed out.