I have been on iOS 8.3 for the last month waiting for reviews to decide whether to upgrade to iOS 9.0. Not a lot out there. There are a couple Russian(?) Youtube reviews but i could not understand them. There are a few reviews for ipad 2, results were mixed. I received the iOS 9.1 download on the weekend and decided to bite the bullet and update. So far, I am happy. The update took about 25 minutes. I did not activate icloud or any of the other online backup features (I generally do not like to keep personal info in the cloud, but I do use dropbox for working with others). I am always concerned about battery drain after an update. I am happy to report that after 11 hours of standby over night, the battery usage was 0% change. During usage, the battery usage appears to be normal, so far. But on my particular iPad 3 and setup, i never had any battery prblems with iOS 7 or 8. The UI does seem to be alot smoother with less stuttering compared to iOS 8. Apps may load slightly slower than before, but this is just a subjective observation. No crashes or lockups yet. I do not have a lot of apps (16 GB version). Dropbox, Netflix, Yahoo Mail, tripadvisor, WPS, google maps. Google translate. No problems. In fact, fitness app which downloads heart monitor and workout info from my Mio fuse wristband works better than uder 8.3. Safari seems to load pages a bit quicker than in iOS 8 and a less glitchier. Pinch zooming and scrolling seems definitely smoother and faster than before. Also purely subjective. No issues with wifi or bluetooth connections. I will report any noticable changes or issues. I would like to hear from other iPad 3 owners. Anyways, I would recommend the 9.1 update. YMMV.