I've noticed the battery management in the iPhone 4 to be better than pretty much all smartphones out there.

Hell my Galaxy S has roughly the same size battery and roughly the same specs ... it still just gets through an eventful day, whereas the iPhone4 goes through one and a half eventful days, really no comparison.

The N900 performs just as good (or slightly better) than the Galaxy S when it comes to battery life ... so I think its quite superb considering its drawbacks.

It just needs users to not hog resources when they're unnecessary, which isn't too much to ask (but those n00b users probably cannot manage)