I am trying to decide between two smartphones: iPhone 4 (16GB) or Droid X by Motorola. Many at the church are switching from Outlook to Google and are touting the interface with the Android platform. Comparing the two products, the iPhone comes with more storage on board (the 16GB is the only affordable one for me) but you are unable to add, while the Droid has less that comes with it (8 GB on board and a 2 GB sim card) but it can expand to 40 GB (by getting a 32 GB card). The Droid X would be about $60 cheaper at the point of purchase, but storage add-ons would shrink that difference. The Droid has a larger, though less-resolute, screen. Anybody have any insight into either product or operating system, or perhaps both? Experience with/cost of apps for either? All of this has me on the verge of being in way over my head, so any feedback is appreciated.