I have the Kindle Fire and LOVE LOVE LOVE it! I use it to read, check mail, the weather, etc. I have some cute freebie apps for my littles on there too, which helps while in a waiting room at the dentist, or orthodontist's. I can take it with me to the gym and read while working out on the tread mill, elliptical, or recumbant bike. It stands sturdily (is that a word) and doesn't flip pages or slip down while I'm doing my workout.
What I don't like is typing/texting on it. I can't text at all! Typing I can do just fine, if you don't count my typos. :P