I like the Nokia 770, and I imagine the 800 is a good improvement. At the same time, the faults of the device keep it from being a blackberry replacement and relegate it as a hobbyist toy for me.

I have been hoping for months that the iPhone would be a viable Blackberry replacement. My fingers are still crossed. Yes, it will be much more locked down than a 770; it's a phone and that is the game. (For that reason, I was *sure* Apple would go the MVNO route! Wrong...)

The size of the device looks perfect, and the resolution is a great improvement over everything by the 770/800. If the touchscreen works as well as my MacBookPro's touchpad, there are plenty of great opportunities with the UI. My only concern is that I haven't seen a landscape version of the keyboard yet... but Apple couldn't possibly have forgotten to provide that, right?!

It is expensive, but not too far out of the park for what it offers.