The major downside is that pictures don't look particularly good on the screen, and they are black and white. If that's an issue for you, Amazon has Kindle apps available for Android tablets, iPads, phones and PCs, where you can download the books you've bought in colour.
The Kindle will sync your last read page across different devices, so providing the product you're using to read on is connected to the Internet, you won't spend ages flicking through pages trying to find your place in a book. Compared to a phone or tablet, text is more comfortable to read on the Kindle's E Ink screen, as you don't have a backlight shining into your eyes tiring them out.
The new version of the Paperwhite includes some extra software features. Firstly, it makes it easier to skip through the book by adding a slider to the bottom of the screen you can drag to move quickly through pages. Next, every time you look up a word in the built-in dictionary, it's added to a list so you can look back at it later.
That's nothing Earth-shattering, but one good idea is Kindle Freetime. This lets you set up a password-protected area for your children that shows only the books you choose them to see, and monitors how long they read for, encouraging them to hit a time target set by you. Children can also use the vocabulary list, which seems to make more sense than for adults.
Buying books from Amazon's own shop is fairly simple using the Paperwhite and the touchscreen keyboard if you know what you're looking for, but it is still easier to use a computer to browse for what you want. Providing your PC and Kindle are connected to the Internet, your purchase will be downloaded to the Paperwhite within seconds with nothing else for you to do.
Amazon has improved the best e-reader on the market, with the only major things to dislike the now relatively high £109 cost of the device and the miserly lack of charger in the box (you get a USB cable, but will need to find your own charger or plug it into a PC). Providing you're happy to surrender all your future book purchases to Amazon's care, it's a great buy.