[mlin]

With all of my settings:
CPU adjustments
auto-brightness
mobile always on- turned off
email synced manually,
GPS on

I get about 15-18 hours with the following usage:
6.5 hours of music
50+ text
30-45 min phone calls
1-1.5 hours of gaming (this seems to be the biggest drain for me)
1-1.5 hours web (browsing, forum posting, app store, email, maps, youtube)