I am probably the resident Pre fan here. My mouth waters whenever I think about how close the release date is.
The iPhone's biggest pro is its applications, the Pre is new and there are not that many yet. I do not know what Bell will put on the Pre, but in the US, they put on a gps navigation app that works like tomtom. It comes free, whereas you would have to pay $100 for the iphone tomtom app.
Check out some pre apps here:
http://www.precentral.net/homebrew-a...ated&sort=desc
If you dont mind waiting until it comes out on the 27th, I would go to the Bell store or Futureshop/Best Buy and check out the store model. It seems like the Pre is really well designed and fits better in your pocket. It looks like it has more of a cell phone feel as opposed to the feeling of putting a calculator up to your face to talk.
The iPhone 3gs has video, the Pre doesnt. The Pre is better at syncing your contacts using google/facebook/yahoo, and since it is palm, it comes with a great calendar app.
The biggest pro for the pre is its ability to run multiple apps at the same time, where the iPhone can only run one program at a time. The design is built for multitasking. You can also buy the touchstone, which will charge your phone wirelessly. The battery is removable, unlike the iPhone, and neither has expanded memory slots.
Personally, I much prefer a physical keyboard, so I think the Pre has a leg up in hardware, and I prefer the smaller, rounder unit. I bought my last phone because it was small and could comfortably fit in my pocket. I heard rumours about a software keyboard coming out on the pre, but I dont think it has been made yet.
Bell also has better coverage across Canada, but I dont hear many complaints from Rogers customers.