The only ereader without buttons I've owned - the 2014 basic Kindle. It wasn't bad in other aspects, but I just can't use an ereader without physical buttons (or at least the haptic ones like the Voyage had). Fingerprints drive me mad.
My very first ereader was the first basic Kindle with thin clicky buttons hated by Deskisamess.
I was fine with it, but of course I wouldn't want to use it now. Compared to modern readers, it's very slow, with very few customization options, unlit and the screen is dated. But I loved it when I used it back then.