So far it seems better on my 4S. Had a bit of a scare with it on my iPad 3, my first recovery mode situation in 3 devices and 6 years but had to have one some time.
I'm running it on my 4S, it seems smoother and more stable than 8.0.2. It was very laggy initially, but seems to have gotten better. Fewer freezes and fewer app crashes. No worse, maybe better.