As of right now is it a smart decision to pick the 2020 iPad Pro with the a12z chip rather than the air 4 with the A14? Will the A12z still be holding up in a few years? Not quite up to speed with apple’s processors, thanks.
To expand on what Coolmaster said: only go with the iPad Pro if you really want Face ID, the camera tech or (with the 12.9-inch model) a larger screen. The iPad Air is a considerably better value for most people, even if the iPad Pro is slightly more powerful.