Any cheap budget table isn't e-ink, which matters for battery life and, at least for some people, reading pleasure. Also, I mainly use my Kindle for reading research papers in academia, into the hundreds of publications each year. So, after years of using these devices its UI (which I find admirably simple and straightforward) is burned into my muscle memory. So, switching to another series of devices would mean having to adjust to a new workflow that may well bring unwelcome complexities.