To be honest I have seen nothing but improvements in call quality than the moto droid. My incredible has had no complaints from callers. The moto droid's call quality was terrible and that is why I got the incredible.
The call quality is perfect. My moto Droid had static if I had any lower than full bars. The Incredible is so quiet and static free that I forgot how a phone call should be. If there is a moment of silence in the conversation, I find myself asking the person "are you there" cause its so quiet it seems like the call is lost. Also, if you use a car bluetooth, the Droid was unusable if you were in motion. Road noise, even rain hitting the car and wipers were heard by the other party. And I have a very quiet vehicle. No problems with the Incredible.