I don’t have a Tablet, so I can’t say on that.
I do have an older Kindle and I LOVE it! I still buy some hardcover books that I want to keep. The Kindle is awesome for books that I want to read pronto and not have the clutter around. Plus, there are many freebies for dwnload! The battery last forever, too.
The mister also got me the Kindle cover thing with a slide-light built in. I can curl up in bed and not bother him with lights now (it also makes it more convenient to hold). I don’t know if the Fire needs a lighted cover but for the older ones it is a must, in my opinion.
I don’t know which is the better value but I absolutely love my old Kindle!
I got an iPad for my granddaughter. My Kindle has a keyboard across the bottom. I do get some of the newer books on it. I just can not hold a hardback anymore. I still use it for games, especially word games.