There's the whole InkView layer that I'm naively hoping would ideally hide the quirks away from us ;p.
Which, granted, may not always help us, as we often do things slightly closer to the metal than what InkView is designed for.
I *really* wouldn't recommend older Kobos (today, that is, unless you get them extremely cheap), though, stuff was all kinds of weird until Mk. 6 at the very earliest

. Especially if you pit them against the matching Kindle generations.