I agree, the iPhone is shiney and new and has all the bells and whistles but I think when you want to get down to serious, reliable email and such...the Blackberry is the way to go. A good example is when you travel and you see all the business men with their BBs (and not iPhones).
However, crackberry.com was working with a few other techies and did a 'round robin' where they each try another phone and then put their remarks up on the site...so you can get several opinions.
go here...
Smartphone Experts Round Robin