There are only 2 types of Kindle for two (2) very distinctive type of people: 

a. Avid book readers

The following may be your major concerns:

– Download/transfer thousands of both free & paid e-books into an e-reader.

– Read e-books for days & night (with Built-in Light, up to 8 weeks) in a single charge

– Enjoy carrying an e-reader everywhere possible (from 170 grams only)

Recommendations – 3 options categorized as follows

Entry Level – Kindle | Mid Level – Kindle PaperWhite | Top Level – Kindle PaperWhite 3G

b. Multimedia junkie

The following may be your major concerns:

– Download/transfer thousands of most popular apps and games such as Facebook, Netflix, Twitter, and Angry Birds Space for yourself or kids

– View YouTube, Facebook, Twitter, Gmail, Hotmail, Yahoo! and more on stunning HD Display (1280×800) & Ultra-fast WiFi for Internet

– Take photos or making video calls using Skype, Facebook, and other app with front-facing HD camera

Recommendations – World’s most advanced 7″ tablet – Kindle Fire HD (16GB) with Kindle FreeTime — a free, personalized tablet experience just for kids. Set daily screen limits, and give access to appropriate content for each child