Well, since I'm gonna get the iPad Pro in November (yay!), I decided to update my iPad Air to iOS 9. Might as well get used to it. Me likey!
I like the two-finger swipe on the keyboard to move the cursor, the lowercase keyboard and the new multitasker look. I especially like the side load function - especially since my backup got corrupted and so I had to sign into everything! Very very handy having the side access to 1Password so I could copy all the passwords. So, corrupted backup = bad. But, iOS 9 made starting from fresh very handy.
I got my iOS 9 IPSW from Redmund Pie and did a full DFU-mode restore. It was very quick and I received no errors. So, if you're having issues getting the update through iTunes, you may want to consider getting the file elsewhere and "manually" updating. As always, YMMV.
Still, not unhappy w/stock iOS 9 (though I am keeping my iPhone jailbroken!
).
Marilyn