So far i tried almost all the ROMs available for 780 and what i found is no matter which i use the battery backup remains the same.
The noticeable difference is of and hour or so that's all.... same goes to RAM
usually its been advertised in ROM that plenty of RAM and longer battery life but i found all of them more or less same.
Battery - 60 hrs , wifi on , general use of whats app nothing else
RAM - around 450 MB free
Whats your score ? and which one is the best ROM considering those two criteria...
Do post your reply !!