my personal recomendations.. im using #2 with lg-zvd speed kernel and i get 20+/day
first thing i always do is run through each option in the settings lol turn off all crap you dont need:
-Sound/audible selections off
-Display/auto brightness off and dim brightness a little
--/auto rotate off (unless needed)
--/animations off
-accounts & sync/turn off anything you dont use
-language & keyboard/predictions off
--/sound feedback off
-then i do launcher settings, same idea turn off what you dont need
-then i run through the apps, uninstall g+ and tether because i dont use them.. i hardly ever download anything except volume+ & a game here & there..
-use minimal homescreen & widgets
-ALWAYS turn off data & wifi when not using internet..
im on 10 and a half hours with 67% right now, and i was listening to music for like 6 hours at work, used the wifi there for an hour or two and forgot to turn it off untill i got home lol so the whole drive home my wifi was searching for a signal and i still have 67%!!! i made a few phonecalls too because i got a flat tire during lunch and i sent some txts because im a ladies man
i get great battery life!! never need to bring a charger with me anymore lol