I have a Sprint SERO plan and were finally allowed to add Android phones (for an extra $10 a month for the Hero). The integration is just flabbergasting. Make contacts on the phone, it uploads to Gmail contacts. Edit Gmail contacts, it updates the phone. Import from Facebook. Use Shazam to find out who is singing that on the radio, send it to myself by text, then make a Pandora radio station based on it. Everything just WORKS. An icon on the desktop that with ONE CLICK will give me turn by turn directions from wherever I am back home. I had a Touch Pro 2 with Windows Mobile (I don't miss the keyboard at all, surprisingly) and it was just a dead system, everyone stopped developing for it. It is so refreshing to have something useful again =)