I am doing pretty much the same.
I am an at&t store manager so I am always on my phone showing customer my apps and such.
In any given day I am working a 7-9 hour shift
I make about 10-15 calls
Send/Receive about 30+ emails
Send/Receive about 40+ SMS/MMS texts
Send/Receive about 10+ BBM
Facebook 10+ messages
Aps running are as follows:
Weathereye, Youmail, BBM, Facebook, Viigo, Telnav, googlemaps, slacker radio...
With all of the above I make it through my day with about 5ish% battery left. After my day is over I have a 30 minute ride home, Yeah for the car charger!
I am using .282 and was using .247 prior to that.
When you are done switching OS's, if you are still having such bad issues you may want to call carrier and do a warrenty swap.