[SprintTouch08]

the Diamond was meant to be an iphone competitor- a multimedia device with built in storage. The pro device is a business geared device so it has an SD slot. Its not the best reasoning but...

a lot of people would rather have the smaller phone than they keyboard just like why a lot of people had touch's and a lot had moguls- choice. I doubt there will be all that many returns other than the usual suspects who play that game with sprint to get new phones for older ones or play the return game