Depends, if you're only going to use it for media consumption purposes, the main benefits that is noticeable is the bigger and better display (brighter, better colours and smoother) for your usage.So we were playing around with a 10.5 in Apple Store and look like it is kind of cool. We are using air2 for more than 2 years now. Worth it to upgrade at all?
Is it better in every way? Absolutely. Is it worth the pretty expensive upgrade? Not to me. The Air 2 still rocks. Even Lightroom is fast. I'll wait for the next model, which will hopefully sport an OLED screen. And by then my Air 2 will be slowing down, I'm sure.