Thanks for the responses! I'm a big Android user, but I also like sitting in the sun on the beach (with sunscreen - don't want to start another topic), so I'm thinking of getting an e-ink reader, because these screens (including the Fire) are almost unreadable in direct sun. I would also like to have a simple browser for getting email and for reading text-heavy sites - no video or animated graphics.
I use my Android phone as a mobile hotspot for my Fire, and I was wondering whether it could also work on a regular wifi-only Kindle.
It looks like my questions are answered. I think I'll just get the plain-vanilla $79 wifi Kindle and see how I like it.