Every single rom I've used has pretty much been the same with battery. The battery on the galaxy nexus isn't the best. That's how it was built. No rom is going to magically make it better. Any difference in battery you get will be minimal and depend more on how you use your phone. I suggest try out some ROM and kernel combinations and see what works for you. There are plenty to chose from and honestly, they are all good. You aren't going to get one single answer from everyone here.
Galaxy Nexus (Kitkat), HP TouchPad (Jelly Bean)
Palm Pre Plus
Everything before that doesn't matter.