Did anybody feel like their phone was stuttering a bit and seemed a little buggy in the last few weeks before the update?
For me there were a few things:
1) my keyboard (use swiftkey) began to really lag. It started after an update to the app, so that's what I originally attributed it to, but after a few weeks, I started to reconsider that conclusion based on other issues...
2) screen transition animation was stuttery; not all the time but often when I first turned on the screen. Opening apps remained zipping along, but overall the navigation experience was affected by what appeared to be some issues swiping from screen to screen.
3) various apps that I hadn't even opened and I didn't even think were running, would force close out of nowhere, similar to the hangouts glitch that a few people mentioned. Not a huge deal, but seemed a little glitchy and weird.
4) my corporate email randomly got completely deleted and I had to set it up all over again. I thought it was just me, so I really didn't know what to make of it, but when I found out a friend of mine with a Turbo experienced the same exact thing, I thought it might have to do with some preliminary steps Moto was taking to test lollipop in the background. I'm partially basing this on all the hub bub surrounding the update that began in early June, so obviously no true empirical evidence.
5) battery seemed to fall off a little. Not terrible, but worse than it was. I generally check GSAM, and my stats legitimately began to decrease in the last month or so. Also I was getting less screen time and my percentage was lower than it had been at the end of the day most of the time. And my usage habits really hadn't changed at all.
And to my point, anybody who has been experiencing anything like this, or any of the above symptoms and is reluctant to update to lollipop for any reason; from my first 3 days on it, I can say without a doubt, all of them have been alleviated. Battery needs more days to know for sure, but it seems improved, and everything else is completely gone.
I should add that I did not factory reset or clear the partition cache. This phone is moving smoother than ever, and I really do not have 1 gripe about the update.