Why pay more?
We have 3 of the Kindle Fire HD 8.9". I LOVE them. DS8 has downloaded hundreds of games and if he runs out of space, we just delete games he's tired of and he downloads more. The other games are always in his account, ready to be downloaded again if he wants them back.
Amazon has given us free account credits to buy music and/or games. We've never had that happen with iTunes!
Actually, I've heard that Apple products have issues with low battery life and it was an advantage for Amazon that Kindles have better battery life. DS8 could play games on his for hours (if we let him) before he would have to plug in. Then, he could just plug in and keep playing.
Amazon has a Kindle Fire HDX 8.9" this year for $379. I like mine just fine & would recommend looking for a deal on Amazon for an older version.
I do like the deal with the kids' version that comes with a bumper and a 2 year replacement if they break it, but it's a smaller screen. Ours have been pretty sturdy but DS8 recently cracked the screen on his by throwing it down purposefully (it still works).