[mindfrost82]

I own both WP7 and Android. I use it for business and pleasure. It all honestly comes down to your needs.

Mango will be a big turning point for WP7 though and allow you to do more with it. Some Exchange setups won't work with WP7 but they mostly work with Android. If it doesn't work with the built-in client, there's some 3rd party ones.

With WP7 (including NoDo), its meant more as a consumer/entertainment device. Mango will open it up some more for businesses.

If you require certain apps for your business, that's something to research. I manage our Linux servers here at PPCG, and I can SSH into them from Android, but there wasn't a client for WP7 the last time I checked.

You can also tether with Android and use Google Nav if you travel.

If you're looking for the NOW, then I would probably lean towards Android. If you're looking for the FUTURE, then WP7 could be the winner once Mango hits...but that probably won't be until this Fall.

EDIT: With Office, it depends on your needs too. WP7 does have Office, but there's currently no way to sync docs (coming in Mango to use SkyDrive, or unless you use the USB storage trick). On Android, you can access your storage card to save docs and most of the phones come with some form of Office editor for Word and Excel (not officially from Microsoft though). There's also a Google Docs app that lets you edit/sync your docs that are saved in the cloud.