For my sins, I have two Blackberry's with GPS and I don't even use them on the ground. I use my iPhone for just about everything. It works well in the air.If you really want to turn it from a clever phone into a very powerful handheld computer then "Jailbreak" it. Its perfectly legal, free, reliable and gives you access the very powerful "dark side". Try Skype over 3G or the Edge, leaving apps running in background and some great free apps, such as downloading Youtube vids and storing/replaying them. PM if you want to know more, it takes 5 minutes.