I always looking out for the best in each category and put quality and performance above all else when deciding. IMO Oakley makes the best lenses on the market. If you are truly out for the best visibility and board often then you can not achieve it with a single lens. Id recommend getting one for overcast, one for sunny days and one for night (if you ride at night).
Contrary to what some people might say there is no one lens that does it all. Sure there are some that are pretty good for everything, but to answer your question purely based on best then you need more then one lens. With that in mind I would buy a goggle that allows quick and easy lens changing.
What ever you do don't buy polarized.
What's wrong with polarized lenses? I'm just curious..