I just got my HTC Trophy in today, I'm on Verizon. I have to say I'm really impressed with it and have enjoyed using it. I came from a Blackberry Storm which was a horrible phone and I find the responsiveness of the UI to be amazing.
That was the biggest reason I didn't go with any of the droids, I didn't like the laggy, stuttering of the UI with even the fastest of droid phones. But with the WP7 it just feels buttery smooth all the time.
I like the mapping but can't wait for turn by turn, the voice recognition on it is also really good. I've had to ask for directions to some weird places and it understands and picks correctly each time.
The keypad and autocorrect are also well done and I haven't been frustrated at all while using it. The Charge pissed me off in about 10 seconds of texting and let's not get started on the Storm..
It was also the cheapest of the newer phones, I paid $99 versus 299, 249 or 199 for the droids out there. I have really nothing but praise for it at this point. We'll see how it keeps working out as I own it for longer.