I voted better... To start the battery life was horrible! It only lasted from 7am to noon. I tried complete battery drains followed by complete charges so it would "learn" the battery. Nothing worked until I removed WeatherBug. As soon as that was gone I can go about 2 days without charging it! Hope this helps someone else.
I voted better... with the previous OS, by 11 PM, I would be under 10% (Since I also use my Storm as my alarm, its been great) but now with 5.0 running on my Storm, the battery is above 20% So I try to increase the number of battery pulls (found Leave it On does not leave apps on) and try drain the battery more.
Overall, I love the longer battery life, but I fear once I get a job I might need the 1600mH battery, or not.