i think with carta it's gonna be ok
you have to know that i'm very picky

also about the contrast that is not great on pearl, i really need to be in a place with ALOT of light to be comfortable.
For me, the main problem is that it's...s...l...o...w to switch pages, especially for accademic documents that you need to go from a chapter to another often.
Also, you have to know that Onyx did a great job in the last updates, that the onyx became much more faster to turn pages.