My n900:

Titans power kernel with limits set to 250 and 900. almost all apps from extraswith a few from testing. facebook and skype are always on, almost always using wifi, if not then 2-2.5g only. screen brightness at 2/5 bars. always on silent mode, but do have haptic feedback on for touchscreen... I text, skype, browse web, and listen to music throughout the day...

My phone will last about 3.5-7 hours. I almost always plug it into usb to charge while at home, and between classes during the day at school.