Best CPU Governor
The Best CPU Governor for Performance and also Battery life seems to be Interactive or Intellidemand.
For indepth Kernel Benchmarks and CPU Governor tests go to my thread here: http://forum.xda-developers.com/show....php?t=2625656
Here are SunSpider 1.0.2 benchmarks to prove the point.
(Lower is better)
Conclusion: It is amazing that with this phone we can achieve performance that is close to the 64bit processor of the iPhone 5S. Screw Apple. (Just Kidding)
Interactive is the best CPU governor. The end.
It is interesting that conservative provides good performance and sunspider results. Maybe if you really want to be sure you have good battery life, you should stick with conservative. Although in all honesty, battery life is dependent on your brightness, and subsequently amount of screen on time, and then of course, the amount of CPU intensive tasks you perform like gaming, or Web Browsing. So differences between governors and battery life will be minimal if you do not adjust your user behavior...
I'm using a LS980 Sprint LG G2. I suspect that across variants results should be the same since SoC are based on the Snapdragon 800.