People keep saying this, but I don't think it's as universal as you think. IMHO, VZW is horrible. I never had good service with them, their CS was bad, and they did all sorts of dirty tricks to cripple their phones. The only way I would switch away from AT&T at this point is if VZW could soundly beat my current rate (which BTW is already a super discounted family plan, so unlikely).
Remember that AT&T came out awhile back and said that most of their customers are on some sort of discounted plan. VZW will have to beat those plans and not the listed plans in order to move a significant amount of people.