I'm not going to get the latest iphone -- i don't think its worth the money. One, it will be extremely difficult to get a hold off because of whole contract-deal thing. 2. the new features it talks about doesn't really appeal to me -- yes 3g, but if you're on a campus with wi-fi most of the time, who cares? And the GPS isn't even a real GPS, its ASSISTED-GPS -- I have a feeling it gets your coordinates from cell towers.
3. It doesn't seem as durable as the old ones, especially with the plastic casing.

The only things that really appeal to me in the new iphone are 1. larger space -- 16 GB is godsend, I need more space!). 2. the earphone plug in isn't depressed like the stupid first iphone.

Apps and the rest can be used with the old iphone with a firmware update, so I'll be all set.

I'll wait for iphone 3.0. In the meantime, I'm saving up for my macbook air

not if you're in the woods without a cell phone connection. So that means you're pretty much SOL if you want to take your phone out of the country as well, it means you can't use it if you don't have coverage.

Right now I'm using a Garmin Mobile 10x with my Palm, I can take it ANYWHERE as long as I take the maps, it has point of interests, and you don't need a constant internet connecting (i.e. use of google maps).

And BTW, from the link you gave me:

The Assistance Server can locate the phone roughly by what cell site it is connected to on the cellular network.

I'm sorry, but for routing, roughly doesn't cut it.

Some A-GPS solutions require an active connection to a cell phone (or other data) network to function, in others[2][3] it simply makes positioning faster and more accurate, but is not required.