I'm thinking about getting my parent's their first tablet, but I'm not sure if they need the iPad Air 2 or the iPad Air. They are light users, usually just YouTube, Netflix, Candy Crush, Facebook, and a little bit of web browsing and taking some pictures. It will be their first tablet, so I'm not sure what would suit their needs best. One thing I'm scared of is next year, the iPad Air will be two years old, and won't iOS 9 slow things down? I'm in Canada, so I would be spending around $200 extra for the upgrade to the iPad Air 2. Is it worth it?