I've got my iPad Air (A1474, MD786LL/A, basically the 2013 model), and I hate using it. Loading a web page is an exercise in frustration - Safari crashes on the regular. I'm guessing it's because there's just not enough RAM. Chrome's not any better. iOS upgrades make it worse, and you can't downgrade unless you saved the blobs... Which I didn't. I'm hoping to replace it this Xmas. It IS still good for Amazon video and Netflix, though. And reading .PDFs on it works well, so I get my LN / Comic fix that way. And MacOS 10.15 will let me use my old iPad as another monitor, so it's still useful there too.