I have the Dell Streak because a friend of mine gave me his when I lost my Iphone 4 over the holidays. I love the screen size, but that is about it. The Iphone wins in every other category. I kept seeing the commercials about what Droid does, but they don't tell you about all the things Droid doesn't.
1-doesn't search on company names in contacts (are you freakin kidding me?)
2-web browser is horrible
3-camera is not even close to the quality of the Iphone
4-can't accept appointments in Outlook
5-no favorites in dialer
6-no multiple email integration
7-virtually no accessories
8-no ability to update when 2.2 until AT&T says you're ready
9-Steep learning curve
10-no one stop place to sync your phone like iTunes. Must use sync for contacts, marketplace for apps, windows media for songs, etc
11-touch screen is not smooth as all
12-basically Droid sucks and you have to buy/obtain app after app, to make the phone even remotely user friendly.
13-I can go on and on, but you get the idea. Once the iPhone 5 comes out with the bigger screen, I'm running back to Apple!