Nexus 4 users: what kernel are you running?

The time has come to install CM or PA, but instead of just using the included kernel, what kernel would you guys recommend? I haven't been able to look into it as much as I'd like for the N4, so that's why I'd like some advice.

The battery life on my unit is pretty bad unless it's just on standby all the time. I've set all of my apps to update manually (except Gmail), etc., to help conserve battery life, so a kernel that helps or extends battery life would be huge.

Thanks for your input.