M.D.
My kids got them for Christmas last year. Best. Gift. Ever.
They read, play, and watch movies. They take them on trips, use them in their rooms, and even use them to help with homework. They can get tons of things for free with Amazon Prime. They have gotten kids electronics in the past, but they lose interest quickly. These are almost a year old and still used all the time. I HIGHLY recommend them.
My kids were 4, 6, and 8 when they got them. My niece is 3 and getting one for Christmas this year.