Fit overs are an economical option but if you want the absolute best, pick your maker and have them cut prescription lenses for them. Oakley, Maui Jim, Costa's, Solar Bat, Smith Optics, and others will make your glasses if you send them your prescription. That is the absolute best you can do. You loose quality with fit overs or clip ons but the cost is a factor. Luckily, I have a small enough correction that I just wear non-prescription. Had Solar Bats but the frame broke and I am now pondering what to do as Glenn said, they don't make the frames anymore. In the meantime, I have some BPS that are ok and some sent to me from Japan to try called Swann. Problem is that the Swann glasses are what's called an Asian fit (didn't know that term even existed) and they are a little small on my face for my liking. Expensive glasses but it's all in the fit. There are a lot of different shaped heads out there and you should try on any pair of glasses to plan to buy.
TOXIC