Everyone that I know that has an iPhone loves it. I have found one little bug if you have Capture One 4.0 loaded on your Mac and try to sync your iPhone, it launches Capture One and iTunes at the same time. Here is a work around that Doug Peterson told me:
1. Open Spotlight
2. In the Spotlight window type “image capture”
3. Image Capture should show up under Applications
4. Open Image Capture and go to preferences
5. Under the General go to Camera
6. Choose No Application and this should solve your issue
Update: In OSX 10.6 and 10.7 the interface for Image Capture has been updated. You must plug in the device first; it will show up in the Image Device panel and then it will show up and you can select the device you wish it to be used with.