Also happy to mention that, having updated my iPad for the first time in years, I'm back to doing writing with iPad/Logitech Keys-to-go, and also back to being basically the only person in the world that really likes the keys-to-go. Even Logitech seems to have basically disavowed it...

(Why external keyboard over a keyboard case? Price, and also typing in the iPad is so nice with the iPad in portrait mode -- you can see so many lines of text at once -- cases don't let you do that easily)