I’m going to cut against the grain here. Love the mini and can’t stand kindles. Contrast isn’t the same, interface is slow and laggy. yes, it’s light and readable in direct sunlight, but the mini 6 is super light too, and I never read in direct sunlight. The mini’s size really is quite nice for reading. So much more can fit on one page too.
I'm with you on this - I own the Paperwhite and Oasis but use my iPad for the vast majority of the time (hours/day so it sees a lot of use for reading).