Apparently the "Sage" (which is what I have currently) has a quad-core, but Kobo discontinued it. Sigh, too bad - this was my favourite to-date (needs a power-cover though...).
Sigh - I don't want a giant, note-taking ereader - I want something about the size of a pocket book with a crisp B&W screen.
Why do I need colour? I am reading novels.
Very bad battery life. Maybe 8hrs of reading with wifi off, BT off and only low screen backlight. I need to charge it daily or every other day at best.
Physical buttons are comically bad and often don't register presses.
Built-in book reading app is slow, lacks some critical features and hangs in many epub books. I replaced it with KOreader which finally made the device usable.
It's a great screen size though (9" would be even better).
This seems like a wildly different experience than I have with it. I don't read 8 hours per day, but typically 1-2 hours per day, and charge it every 2-3 weeks.
My light levels are probably 50/50 6% (at night in bed) and ~33% (other times). I did briefly buy a Kobo remote and found that having bluetooth on for that was very bad for my battery life.
The physical buttons were also great - for the first year, then they started wearing out.