[acteon]

I can with no problem make it through the day with my Touch Pro from Sprint. Heres what I did:
*Set backlight settings to manual and have it at the second from the left mark, basically one away from the lowest. (The phone will not be visable in sun light so make sure to turn it on automatic adjustment of back light before you walk outside but for me working in a building all day its an acceptable trade-off). Indoors the backlight is more than adequte.
* Turn off location settings, to be honest it wastes alot of battery and I have noticed an improvement when I turned it off. Go to phone ==> menu ==> options ==> services ==> location settings and turn it to off. Location services will still be available to 911 services as stated but will not be turned on for any other reason. If you rarely use GPS services this is a good thing to do, and even if you do not it is really not difficult to turn back on. (Just a note, if you have it set to automatically download GPS data it will not download unless you reenable location services and will show you an error).
* I rarely will ever turn on wifi and while I have 7 email accounts syncing to the phone only my work's exchange server is constantly connected and gmail is set to every hour, my other five are either set to every four hours or once a day.

With all of these settings my phone will easily last through the day and I normally unplug at 7:30am and with random moderate usage throughout the day by 12am I still have some battery life (depending on the day it is normally between 20%-5%). If i make a long phone call my battery will usually be dead by that time.

I hope this helps. BTW at first with the screen dim it might be annoying, especially considering how vivid it is with the brightness turned so high, but honestly after a day it really is no longer noticable unless you were to compare.