Let the hive mind of Engadget get that for you.
"I just switched to Sprint from Verizon about three months ago for the Pre. Then I went for the Hero about a week ago. Now, I miss my hardware keyboard and am thinking about switching to the Moment. I am still able to switch back to Verizon if I want and get the Droid when it arrives. Should I just trade up to the Moment when it comes out, see if I like it, and if not switch to the Droid? Or something else entirely? Help!"
One positive aspect on the Centro/Treo 500v release is at long last Palm is releasing something new.
The talk about a new o/s at the end of next year is a joke....Garnet has some miles left on it if the GUI was improved a bit. It is a simple and user friendly o/s. Just get a few more models released asap like a T|X2 with voice and a small flip phone like the Moto 1200 Ming.