[Q] What Rom or Kernel improves my battery? topic

My battery is horrible, terribly horrible. I was using Validus, but battery was bad, so I change to XenonHD. Battery has improved, but not enough. Now I'm using CM 12, and it's worse.
I run anything them I want, but the battery is my concern.
So, what do you advise me? I'm going to test B14CKB1RD and SaberSunset.