[NiLuJe]

Speaking of text, keep in mind that unless you setup your device to flash on each page turn, how it looks right after a flash vs. how it looks in-between those can vary vastly (and depends on many many more factors than simply how great the contrast is in perfect conditions ;p). How annoyed *you* get by those kind of artifacts also varies wildly ^^.

That was my usual "pictures of eInk screens are basically worthless" rant ^^.

I mean, they're fun, and nice and all, but I would only use them as a very vague way to say "avoid this, there's no way it'll look great, since it's crap even in the best of cases" (e.g., a PW1).
Or a vague "try this if you can, it might look great for you" (e.g., pretty much anything you might be looking at in *current* Kindle/Kobo lineups ^^. I, personally, might be willing to take the possibly, maybe, slight contrast hit of a PW4 because I simply prefer flush screens. Or just get a Forma to get the best of both worlds, budget willing (spoiler alert: Past me went with a Forma, present me hasn't ever regretted that choice, despite the one glaring flaw of the Forma's frontlight).).
The real benchmark is unfortunately getting your hands on one, and testing it with your usual settings, in your usual reading conditions.

Which is why the actual feedback from people who regularly have used different devices is prooobably more interesting than just putting your faith in pictures alone.

(I *am* exaggerating a tiny bit, the gist of my reasoning being trust people, not pictures).