Safari is the only thing that seems faster and more reliable. Pages seem to render faster. And the multiple-tab bug, while not completely gone, seems to be drastically reduced to the point that I'm a happy boy.
Looks like sites are starting to add "iphone-enabled" home screen "buttons" for us...so we don't have to stare at a bunch of white buttons representing the home pages. Nice addition. Makes the home screen more attractive and easier to find the right one without having to read the labels. Noticed Fox News, Boy Genius Report, and Weather Underground have done it.