Battery - How much Usage i should be getting for iphone 5

The iphone 5 battery is troubling me. On some ios updates it was good and the other times it was bad. The battery on an average on most IOS be it 6 or 6.1 or 6.1.1 got me a USAGE of 5 hours and 30 mins @ the most on 3g and maybe an hour more on WIFI

The standby times have improved with the new IOS 6.1.1 which was pushed out. Forget about standby though , is 5:30 mins normal for an iphone.

I use , fb , whatsapp, messaging , safari and tune in and battery doc. Notfications are to a minimum and mail is on fetch every 1 hour and all the other usual tips and tricks.

How much usage does everyone here get on 3g and wifi ??? Only USAGE

ps: on 6.1.2 now..