I give it a 10! I absolutely LOVE it.
At first, when friends and co-workers were getting it, I didn't really give it a thought. I thought I would just use it to read books, and I have a K3 for that (which I love).
However, after more investigation and listening to friends' opinions, I bought one a couple of weeks ago.
Wow, I am so happy I did this. Besides reading (which is great on the bus in the morning when it is still dark - not to mention the free book rentals with Prime) I have started taking advantage of the free videos, and have watched the first few episodes of The Tudors (great!), and played scrabble with friends.
It is so much fun and I get a lot of enjoyment out of it.
Rene
(only cons: battery life (charge it every other day) and on/off button location on bottom (have turned it off a couple of times!)