The 3 models are:
- Kindle 3 (Wi-Fi Only)
- Kindle 3 (Free 3G + Wi-Fi)
- Kindle DX
This model is a great choice if you already have a high-speed internet connection and wireless router set up in your home and do not need the added convenience of a 3G connection. 3G enables you to download books anytime, anywhere, while on the go. If you do not have Wi-Fi set up in your home, Kindle 3G may be a better option.
This is the easiest option because there is no wireless setup. The built-in Free 3G connectivity uses the same wireless signals that cell phones use, but there are no monthly fees or commitments - Amazon pays for Kindle’s 3G wireless connectivity. Kindle 3G is a great option for travelers.
This model has a larger screen (9.7") and a native PDF reader. It makes the reading experience more book-like. The screen is also sharper and crisper with better contrast. PDF documents appear on the screen exactly as they do on a computer screen and is very convenient.
I hope you find the information helpful and can buy the Kindle 3 that suits you.