Greg Kumparak has done a very good job of comparing The Droid and iPhone. I read the article through and it seems that my suspicion of iPhone having some serious competition has come through. Personally I would love to have a Droid in my arsenal of phones. I have to Google developer phone (Unlocked G1) and an iPhone 3G together with a bunch of Blackberries.
Between the G1 and iPhone, I would choose iPhone but I always rely on BlackBerries to do my work. From what I have read so far, I think there will be a very capable droid or something very close to it, in my life.