I'm torn on which way to go. I have kids ages 7, 10, and 12. DW has a Kindle Fire that the kids like playing with so we thought about getting the kids one for Christmas. But what should we do? Get a cheap knock off for each kid that works off the Google app store? Or buy one new Kindle Fire for roughly the same price and have the kids share it? I like the kids each having their own, but am worried about buying a no name brand.