I have had both the VR28 and G30. I prefer the VR28 for playing ball. As for the polarized factor, I have always wore polarized. Just bought some non polarized to try since they are close to half the price.
Where are you at nick? If there is an Oakley vault near you? They are a bit cheaper.
I used to stay away form polarized and had heard it can mess with depth perception, but once i tried it on the field, I couldn't go back to non-polarized.