Ill chime in with my 2 cents for what it's worth. I just returned an iPad Air 4. This was first iPad since selling my iPad 3 (first with a Retina display) several years ago.
I returned the Air for two primary reasons: the screen and Touch ID.
IMO, when the device is mostly screen - get the absolute best display you can afford. Scrolling and navigating at 60hz left a bit to be desired. Text blurred out when trying to scroll through pages. Writing with the Pencil 2 always felt a bit laggy. Coming from such an old iPad, I didn't think I was going to mind, but I found myself bothered by it constantly.
Furthermore, I always found TouchId to be a constant annoyance. It is a very minor annoyance, but when you are constantly opening up the iPad, the extra effort it takes to find the power button (as you may be holding it in a different orientation) and the extra time it takes for the sensor to authenticate starts to add up.
I will be holding out to see if they update the Pro 11" this month or else look to find a discounted 2018 or 2020 pro.