I purchased 2 pair of replacement lenses for my Oakley Radars - Gold Iridium and Persimmon. First, I rode less expensive glasses for many years, and was skeptical that these glasses would be worth the spend... Happy to report I was wrong.. Fit is great, optics are clear... Really worth it.
The Gold are my go to lens for year round, average conditions. I prefer the gold/brown color and find that these have a good balance of opacity and clarity. No eye strain.
The persimmon were bought just as I do a lot of early morning riding and these are great at dawn, but don't blow your eyes out the way hi via yellow does. I also wear these on really overcast or rainy days... And since I'm riding year round in all weather, that counts for a lot.
My only beef with these is with the hydrophobic lens coating. It works on the outside, which is great. But - its not on the inside, which, if you are like me, is not great as sweat hits the inside of the lens and can create some not great visibility. A squirt from the bottle fixes that along with a few minutes of drying time, but it still is a drag.