Just an fyi: It's not always battery life that is affected and problems don't always show up right away after taking the update. They can take days or even a couple of weeks to rear their ugly head.I didn't do a fdr and no complaint on battery life
I'm in the same camp as you but I've never gotten great battery life with any phone. It's most likely in my case due to several things.Most of you are getting better battery life then I've ever gotten, LP or KK. 12 hours at 49%? I would kill for that.