Liquid ROM. No need for flashing ten zip files to get this and that working its all ready done for you. Fast as can be. Very very customizable. No random reboots. Overall the best.
I just flashed SS yesterday and so far my battery's been great. I get about 4 hours of medium use for every 10%, thats at 1 ghz and 60 vsel. Not to mention its crazy fast. At 1.15 ghz and 60 vsel, I'm getting 2400s on quadrant