Which Kindle Fire HD?

So as you may or may not know, Amazon just announced the new Kindle Fire HDX, with it's shiny new lightweight casing, faster processor, improved battery life, fun new features, and revamped operating system. 





I personally have the Kindle Fire 2nd Generation, and my husband has the previous generation Kindle Fire HD.


Now that the new HDX has been announced, Amazon is also coming out with a less expensive Fire HD -- one that notably will now be missing the front-facing camera, but will also be $139 for the 8GB storage and "special offers" instead of $200. 


Now that they've dropped in price, I'm very seriously considering getting two of them -- one for each of my boys for Christmas.


My question to all of you is this: would you get the 8GB or the 16GB, and why? Though both of my children are able to read (one aged 5, the other aged 8), they will have parental controls preventing them from downloading too terribly much as far as apps, movies, and music go, even with a lot of books.  


I'm leaning towards the 8GB simply because of the cost, but am I overlooking something important?


You can compare the new models available here : http://amzn.to/18WzL41