Around the Air 1 model, the iPad had enough horsepower for my kid and wife to watch movies and play various games. At this point, I have three Air 1's, 2 Mini's and an Air 2 that still work perfectly fine, but have maxed out on IOS updates that have basically rendered them useless due to most apps requiring a later version.....even movie apps!! Trade and resale value is crap. You're literally forced to upgrade to a new device. I bought an Air 4 to replace my Air 2. Then bought an Air 5 and gave the Air 4 to wife. Kid to getting a Mini 6 next month for Bday.