With my extended battery and moderate to heavy use I went from noon to 1am and when I went to bed my battery was at 15%
During this time I was installing applications, used the hot spot feature for about an hour, had Slacker playing 50% of the time, was running with wireless on for four hours then was all 4G, turned the radio off and let my 3 year old play Angry Birds "Bird Game" for 30 minutes, played various other games, rooted my phone, customized and setup all the applications I had installed(Handcent, beautiful widgets, live wallpapers, etc), watched some(looks over my shoulder for the wife) "videos" to test out high definition playback then deleted them because who wants to be caught with that on their phone, downloaded a movie through wireless and watched Idiocracy.
I've got performance mode on for battery, the display I have at 40% I like my phone a bit dark, Data saver off and Data delivery set to default.
I am very pleased so far with the battery performance.
Right now with 4 hours after taking it off the charger and Slacker playing through head phones for 3 hours texting people sporadically over all of it, the battery is at 80%; sure it is higher and need to get that battery widget and do away with the 10% increments.