Should you get a BlackBerry or an iPhone?

So while I have been doing some research about which phone would be best for me and my needs.. here are some of the things I have come across.

Should you get a BlackBerry or an iPhone?

BlackBerry
Best for: A person who frequently travels internationally, writes a lot of e-mail on the device and needs rich e-mail/calendar functions.
Physical keyboard
Multiple carriers
Variety of international plans (tend to be less expensive)
Dial numbers in e-mail and meeting requests
Limited attachment viewing experience
Limited multimedia
Third party application support
Limited handheld browser experience

iPhone
Best for: A person who doesn't often travel internationally, doesn't write a lot on the device, reads a lot of e-mail, browses Web and accesses multimedia content.
No physical keyboard
AT&T only
AT&T international plan only (may be more expensive, but maybe worth the iPhone's functional advantages)
Dial numbers in e-mail only
Very rich attachment viewing
Rich multimedia
Many apps available through Apple's App Store
Rich handheld browser experience

Thanks to all for their input about both phones and services they provide.