That's unfortunate you're having so many problems with your Incredible. I know a lot of people, including myself and my fiancee, are in love with the DINC. Coming from the Storm this phone has been a complete blessing and allows myself, a geek, to explore it's fullest potential and to allow my fiancee, the casual user, to get full enjoyment out of it's simplicity too. Hard to find a phone that does both so seemlessly.
As for Verizon. They have always been really good to us. After 10 years of service with them, they have never once let me down with Customer Service (or reception service for that matter). I've noticed that cell phone plans are really beginning to get pricey with all the forced data plans but I think we're going to see that across the board.
All that said, the EVO does seem like a pretty slick phone. If you end up going that route let us know how you feel post-switch