Here is my 2 cents on this subject. I took my phone off the charger at 7 am. Had bluetooth running all day, 2 exchange accts, 2 gmail accts, updated some app in the market, and it is almost 330 pm and still at 50% battery remaining. I am pretty happy with this. I have my battery manager set to Maximum Battery Saver Mode-Pretty much like juice defender where it shuts off data after 15 minutes of no usage. I also have my screen set to automatic brightness and to shut off after 30 seconds. Hopefully it will get a little better after the battery gets more conditioned.
I would like to add that I did turn off the social networking accts in blur. It seemed to be really draining my battery. I am going to test tweetdeck to see if it works better and less battery drain.