Best Sprint Phone for business?

[Dnomyar220]

Guys, hoping to reach out for a hand picking out a new phone on Sprint...

I need to buy a new phone for work this month (I have until end of August). My personal phone is the EVO 4G, which I love, but I need a 2nd phone for office use. There aren't really any requirements I have, but I will be having HEAVY email usage (active sync) throughout the day, as well as multiple calls. I'm guessing I'll need an extended battery with any of the choices

Here's my top choices, but not sure which one to go with?
-Photon
-EVO 3D
-Nexus S 4G

Any advice is greatly appreciated!

 

[srkmagnus]

I suggest the Photon since it has GSM capabilities if you travel. Personally, I think any of the phones listed could be made to work given the choice of applications available on the Market to do what you need the phone to do.