custom roms for galaxy S5???

I just got my Samsung galaxy s5 and start enjoying the android world. The battery life is superb and I even have a spare battery from mpj, but I heard that a fine ROM also extends battery life. Please share your experiences and tell u me your favorite custom roms for galaxy S5.

I have this rom on mine & rate it.

I see there is also an unofficial CM11, going to give it a try now

I don't know how far developed it is for the S5, but AOKP has always worked well for me in terms of battery life.