I have updated my 5s to 8.0.2. No problems so far, in fact my Wi-Fi feels quite a bit faster and battery life has certainly improved a little. Not sure about other devices though.
The bending thing might be a bit of a media hoax after all, Apple's only had about a dozen reports of bent phones, supposedly. That's the power of social media for you.
I downloaded 8.0.2 on my 6 and it's just fine so far. Really worked out all the bugs as far as I can tell.