I was so close on getting the Treo 650 or Treo 700w, but it required for me to change from TMO to VZ. I have been on the fence for about 3 months and finally took the plunge last week. I ended up staying with TMO and purchased an 8700G.
What the heck was I waiting for? This is exactly what I needed for my business (not having to wait to get back to the office/home to check email).
I still have my HOTSPOT account, but I'm thinking of dropping that since I purchased it primarily for checking email while on the road.