I typically use iPads for 3-4 years and am currently deciding between the 10.5" 2017 iPad Pro and the 2019 iPad Air. The iPad will mostly be a media consumption (Netflix and YouTube) and web browsing device for me, and I don't play any games on it. I put a high premium on lag-free and stutter-free user experience and don't like to wait too long after clicking or typing something for the screen to respond. While ProMotion and quad speakers are great selling points for the iPad Pro, I am just concerned that given that the CPU on the Pro is already two years old, I am not sure how it will hold up to iOS 13, 14 and 15 upgrades at which time it will be 5 years old. I have never used ProMotion in my life other than at the Apple store, so I am not sure if I will even miss it. Should I just go ahead and get the iPad Air for future proofing purposes?