All good PNG, but I was talking about the phones on VZW.
But we can keep talking in parallel about Sprint if you like
One other factor that could result in buyers remorse on VZW is the rumored iphone 5 coming out this summer.
VZW is smart though, they're not releasing the Thunderbolt until > 30 days after the iPhone4 was released, so anyone that bought an iPhone on day 1 isn't eligible for Verizon's "try it for 30 days and return it if you don't like it" policy.