I've only had one crash the day after the update. But suspect the streaming app I was using. Apart from that I've gone from daily crashes/reboots to none. Still using it daily as well.
I am very happy :)
To be honest the Google ecosystem seems to work a lot better than apples, especially if you don't have a Mac but a PC. ITunes is terrible software. The backing up is a nightmare to use because its so flaky.
My only screen protector was on my iPhone 4 and it ruined the screen because it made the screen blurry and rainbow coloured. Total waste in my opinion.