I recently posted a similar question here:

http://www.bikeforums.net/showthread...itional-lenses

I guess for some people, transitions lenses are a good deal, but some people are more picky. I would lean towards the oakleys myself, but Rudy sunglasses offer prescription services as well. You might be better off just getting some decent clear lenses in an ok frame through your insurance and then dropping some bucks on some dedicated Rx sunglasses.