Amazon's newly introduced Kindles, including the Fire tablet, vary by quite a few features and certain options add more to the price. How to decide which Kindle to get? Just check this flowchart for your options.
Michael Degusta, writing at The Understatement, counts at least 11 different features across the new Kindles. Drill down to find which features and prices affect you. (Click to expand):
If you need help finding out which iPad to get, there's also a "Pick Your iPad" flowchart in Michael's article as well. Pick a Kindle, Any Kindle! [The Understatement]