I've had a Kobo Aura for a bit before, touchscreen was ok but much much prefer physical buttons, so ended up returning it.
Then used a PRS-T1 from a second hand store fore a long time, and tho it's slow sometimes, the presence of physical buttons made it wonderful to use. I also prefer buttons to touchscreen, as I am usually reading wile mobile (walking, on the train) where swiping/tapping the screen ends up being way more awkward, and I cannot operate it single handed.
Since I am less monetarily gifted, I will most likely buy a device second hand, so whether it's in production or not doesn't really matter, since I'm gonna be on ebay anyway.
in advance!