QFE best rom for the d3.
If your concerned about battery life. I run a un activated D3 with liberty rom and hit just over 5 days and some odd hours with init.d and system tweaks + calibrated battery accordingly. light to moderate usage with wifi on for all 5 days. Obviously it wouldn't get that kind of battery life with the radio active but that is still very impressive. Easily a day and a half with heavy usage when it was activated. IMO if you calibrate and use the speedyv7 (init.d and maybe supercharger) script ALL roms will get around the same battery drain when they all run the same base system. Search for how to properly calibrate the battery, it absolutely must be done every time a rom is flashed to get accurate battery readings.