How's Your Battery Life with iPhone 3.1?

So, how's your battery life doing under iPhone 3.1? If you jumped on it immediately last Wednesday, or had a few days to try it out at least, have you noticed any big changes? Much better? Much worse? Or is it pretty much the same?
Yeah, we ask this every time there's a new firmware, but that's just because Apple seems to be tweaking things every time there's a new firmware.
So, win, lose, or draw, let us know how it's working for you. And if you're having battery problems, remember to check out TiPb's How To: Troubleshoot iPhone Battery Life Problems guide.
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.