I’ve had my mini 4 since they were introduced and have had it in my bag almost everyday, it just ‘works’ for me. Thought the mini 5 would be the replacement, but I was hoping for more - promotion and quad speakers would have been nice - but, the newer processor and (old) pencil support is about it. Not an exciting upgrade, just ok.
So, I ended up finding a new (made April 2019, sealed box, 0 cycles on the battery) cellular 256gb iPad Pro 10.5 ‘refurbished’ on the APPLE website, which saved me $100 over same configuration new AIR, and has some advantages. 10x processor is snappy, 4gb RAM, great display with promotion, 6-element optical image-stabilized (the new 11” cut this feature) camera with flash (not that I use a large iPad for photos normally but it’s there), 4 speakers are what I was looking for. It’s not mini sized (which I’ve loved), but has advantages for media and work paired with a magic keyboard. And, since APPLE would give me only pocket-change to trade in my mini 4, I’m just going to keep it and use it as an ‘easy to carry around’ as I did before.