RE: Edge 28% or Extra 28%
The roll rate with the Edge is pretty quick!. It won't match the rate of say a profile fun fly, but is pretty darn fast at high rates and medium speed.
It's not just the speed of the roll, it's the positive tracking and instant strat/stop response that the plane has to aileron control inputs. Once you learn the plane, it will be like you're connected or something. The lack of adverse yaw that's present with so many other types of aircraft is very pleasant. You point it, and you know where it's going.
Pat