I need to get my 8yo grandson a new iPad. I'm getting an LTE version (his younger brother will get his LTE 6th gen because they're moving out by us, and the wifi is not always consistent - he is on the spectrum, so he can't quite get why he can't watch his marble videos whenever he wants). Anyway, because I'm doing LTE, I am likely gonna go through AT&T Next. I certainly don't want to spend AT&T prices for an 18 month old 6th gen, so I was considering getting him an Air 3. Pros/cons to the Air 3?