I bought my iPad Pro 10.5 shorty after the 11 was released last year. Basically wanted the best DAC Apple has produced so far in an iOS device. The DAC does not disappoint, I'd say it's on par with $3000 dedicated DACs like Chord Hugo 2 in terms of sound quality.
However a bright spot has appeared after a couple of months about 2" from the home button. I got the iPad replaced in Apple store no problem. The new iPad 10.5 is manufactured in May 2019 and its display is almost perfect. Definitely more uniform than my old iPad. No signs of the bright spot at its usual location whatsoever.
I still have a year and a few months of AppleCare left. Not sure whether this new iPad will develop a bright stop also, but if it does, I am replacing again.