Ok - time to chime in on this thread with a one day usage profile for my I910. It's pretty much as I expected that w/out an extended battery this phone will pretty much be a non starter for me based on usage. I find the stock battery life a bit worse than on a stock I760 but its close. I was not able to get a full day on the I760 with push on until I got the extended battery.

I910 - On at 7:30AM - by 10 I was down to 60 percent - at which time I turned off "as items arrive" - changed to 2 hours. Usual phone calls - etc... 40 percent by 1:00 and at 1:30 - hit 20 percent and BT was turned off... at this point the phone is not usable so I plugged it in. I have another standard battery to be delivered tomorrow and once I decide if the I910 is a keeper I'll need to pick up a desktop charger.

So far I like the phone - not Love. Best feature is Form Factor but if I need the extended battery the form gets a bit "Factor". I was expecting to see a big difference in BT coming from the I760 - but no so much yet...

Have a BB Storm coming tomorrow and will see if it has a chance to last a day with my usage profile. Would really like to have one device but up to this point it has not been a reality.