I love my kindle. I have 2nd generation. I love it because if I want a book, it downloads in seconds, no waiting for the mail or trip to the bookstore.

Also, I can adjust the font so I don't need to find my reading glasses.
Another thing I like about it is I don't have a bunch of paper backs around the house.

I am sure other ebooks are good, and do the same things.

I have heard that Amazon has the most selection.