I didn't come from Android but funny story. Just got back from lunch and my coworker pulled out a WP7 phone. I knew he had an Android so I aske dhim what happened to his Evo. He said his friend lent him the phone to play with for a few days while he was away on business (or something) and this is how the story ends:
Next upgrade he is ditching android for WP7.
He said he neve rreally had a chance to see a WP7 up close and play around with it, but after a day he is hooked.