I agree that needing a server for mobile device access to corporate e-mail is a burden, however, with the release of BES Xpress this is no longer an major issue.

You can install BESx right on the exchange server supporting up to 75 mobile devices, after that it requires it's on server but if you have any sort of virtualization in place, it's easy to fire up a small VM to look after this task. The other benefit of BESx is that you do not need a BES plan with your carrier.

The Blackberry is still superior on many fronts in comparison to the iPhone and Android:

- superior e-mail client
- superior contact management
- superior calendaring
- superior battery life

I could add a few more items to the list but from a a business/enterprise perspective, these are the things I care about.

To note, I am a current iPhone user but will switch back to Blackberry once OS 6 is released. I've had a iPhone for a year now and have never experienced this much frustration with a mobile device, simply put, I miss my Blackberry.