i have 4 email accaounts (fully sync) including gmail running all the time. I usually use blue tooth to call on my way to office and back home (each more than half an hour). 
Use facebook (sync again) a lot, play games during lunch time.
Normal use otherwise...At the end of the day, my battery level is usually around 25-30%...not bad

ATK or similat apps really doesnot help. I use Task Manager to kill running apps, but I really don;t find them using much battery.

Display is the main battery killer.


Axura 2.3.1.3 (Froyo Based), Samsung Vibrant 3G