So the radius property of MKCircle is read-only, necessitating that any resizing be done via removal of the original MKCircle from the map view, and adding the new one.
To make things smoother, I am adding the new circle to the map view before removing the old one.
The process of resizing is smooth enough in the iOS simulator, but testing on a real device results in choppy animation, and some temporary "blocking" artifacts of the MKCircle's color as it resizes.
Anything I can do to make it smoother?
