I love my Kindle Fire. It's the only tablet I use, because I love reading. If I didn't love reading I'd probably go with another tablet. Not to say it's lacking anything. It just has it's own operating system (SILK) that doesn't always coincide with common apps. The Amazon app store is a far cry from Google play.
They have a good cloud though. I have the lowest storage 8g and because I have most everything in a cloud, I'm not even close to my max. Right now I have 500 books in my cloud, with about 12 currently downloaded. Only using 1/4 of my storage. I'd go with a Kindle Fire any day over a Nook.