How have you found the new M4 iPad Pro versus your old 2018 iPad Pro? Has it been a a reasonable step forward or a nice to have upgrade?
It's been a nice upgrade overall for me, though I am not really doing anything on it that I wasn't already doing on my 2018 iPad Pro.
The most noticeable boost was the performance improvement. Everything feels snappier, for lack of a better word. Apps open faster, shortcuts launch faster, links open in new tabs more quickly, Mangadex loads almost instantaneously, Notability lags less when I am scrolling while mirrored to an Apple TV, it's one of those things that you don't really think is an issue until you switch, and then you find you don't really want to go back.
As a teacher who walks around the class with iPad in hand, I do feel (and appreciate) the lighter weight. I also get 5g, I can't comment on the camera quality, I guess the OLED display is a little brighter and a little nicer (I honestly can't really see much difference), though the speakers do sound a little worse, like more hollow and muffled (I have to turn up the volume higher to get the same loudness).
Oh, and one cool feature I got was the ability to take a screenshot and scan the text directly in the screenshot UI itself (with my 13 pro max and 2018 iPad Pro, I have to save the screenshot, then open the photo to scan the text).
Battery life feels about the same. You do get the feeling that running apps consume less power overall, but I also turned on the feature to limit charging to 80%, and so I definitely need to charge it at least once in the middle of the day.
I say go for it. I assume we will see an M5 iPad Pro released next year to coincide with the 2018 iPad Pro (likely) not getting iOS 19, but it's really all speculation at this point.