The camera on the iPhone4 is quite nice, I will give it that. Better handling of compression to JPEG than my EVO 4G at the moment.
However, when compared to the EVO 4G, the iPhone 4 just feels like a toy now. My room mate has an iPhone 4, and when ever I use it, I am just kind of surprised at how small it is, how cramped the keyboard feels, and how closed the system is. Took me all of 2 minutes to install a Beta of Swype meant for the hTC Droid Incredible onto my EVO, and it greatly speeds typing with one hand. Then you have the lack of dedicated buttons on the iPhone, while I get the Home, Menu, Back, and Search buttons. The Back button is amazing, since it will return you to other programs you were just in, which makes looking at a link from a mobile chat app quite easy.
Then you have the widgets, which make life much easier. And Apple still hasn't addressed the issue of notifications, and frankly, having them pop up over everything is just dated.