I read fiction on a Kindle oasis. Its fantastic. I can't think of a single improvement.
Its impossible for me to work with technical materials on the Kindle. Specs, tutorials, tech blogs, tech books. All are unusable because of resizing figures.
I crank out the desktop for technical content almost universally. iPad doesn’t cut it either.
But at the same time I have actual physical books for very technical stuff. They are still easier to use.
They probably should be two different devices. Personally I'm waiting for the new Remarkable.
I have one and I can. The case is too slippery. It's hard to operate one-handed while lying on the couch because it slips out of your hand. My old Kindle 3 is very easy to operate one-handed at any angle, no slipping.