I just moved to a 10.5" pro from an original IPad Air. I don't know if I was fully able to justify the upgrade from a use perspective as I mainly use it for browsing and playing audio, but it certainly is worth it in terms of expense on my part. The pro is susbstantially faster and smoother in terms of just general navigation and use, that it is certainly a pleasure to use. My prior iPads had always felt like co sumption devices, and you could really tell they were using 1Gb of RAM. The pro with 4Gb responds more like a surface pro (albeit not yet using iOS 11). I'm finally able to use split screen for simultaneous YouTube viewing with safari in the other pane.
The screen is a huge upgrade that I'm only still realizing the benefit of with the faster refresh rate, etc. Everything is much sharper and more clear than before. The size of the screen is nice, but I don't think the 9.7" was small. It is just that the form factor with smaller bezel is more present.
I really feel like the pro will not truely show its benefits until iOS 11 shows up. Right now it feels like driving a high performance car around a parking lot because you cannot fully appreciate the features yet. So it will be very tough to say in terms of value if the pro is "worth it" from a value proposition until iOS 11 hits, but I am willing to assume that it is worth it.
