I came from a RAZR Maxx and tried mutilple Roms. I pratcialy had to turn off my data to make it through a lil over half a at work day! But ran into BAMF 2.2 and that ROM is a beast for battery! With other ROMs, even with data turn off, I still lose 15-25% idle through the night till morning. With the BAMF 2.2 I was able to lose only 5% on ilde, give or take 5 more (data off). I can actually leave 4g on for the whole work day now!