iphone does not rule but its pretty much better then anything else out there (unless you really like keyboards).
for one thing I get a lot of crashes and had to do 2 reinstalls already. Still love it though.
For all those getting an iphone here is a tip if you are a crazy busy person with lots of stuff to do. Get the app "Omnifocus" Its way to expensive but its awesome. its also available for mac (not sure about PC). If you get the beta mac version off of their site you save 20 bucks when you buy. Anyways read up on the philosophy and you will see how awesome this is. Its basically a glorified todo list. I started using it about a month ago and love it. easily the most useful iphone app right now.
other app you MUST get:
GuitarToolKit
Thats about it. really only those 2 apps
the rest is kinda just throw away stuff.