Just wanted to show this great free plug could be fairly versatile, as regards the pinching of the sphere I think has something to do with the way a sphere is tesselated (i.e Tighter triangles at the poles), I have not managed to solve it yet, but try these settings which I found made it much less apparent on the football:
I’m sure with more tweaking it could be virtually unnoticeable
(This was for an ubershape sphere 6 G units radius, subdiv 18/36 both directions).
Another possible solution might be to use weight maps on the poles of the sphere, no time to try this (anyone?),