I don't think I will ever use the phone dialer on the Pre, thats what Google Voice is for. Since the Pre supports Google Voice, I am pretty sure that I will be using it exclusively from now on. The Hero has visual voice mail, the Pre has transcribed voice mail. Easy win(or tie, since the Hero supports GV as well).

The video recorder on the Hero sucks, apparently.

Battery life is the only one that seems to be really important, but you can get an extended battery for the Pre.

I have played with the emulators for both android and webos and WebOS just seems to be miles ahead. Granted, the android emulator really doesn't let you do very much, but in general it seems the interface is poorly designed. TouchUI is really nice, but I think having multiple apps open to flip through is more imporant than flipping through widgets.

Ideally you would have an interface where every app has a corresponding widget, so when you are in card view you see widgetized versions of the apps as opposed to just zoomed out versions.

I think there will be a lot of changes for the Palm Pre before the end of the year. The expansion to other carriers and the introduction of the Eos should all help to bring in new users and developers.