Default [Q] Best Battery Life Kernels/ROMs

Does anyone have any recommendations for the best ROM/kernels for battery life. I switched from MeanBean recently to some CM10 (DU) and CM11 (carbon) based stuff, and my battery life has been pretty bad. Sometimes near 20%/hr. Could always go back to Mikey's ROM, but I wanted to play around with stuff like HALO while still having enough juice to use it as a daily driver.