I have a set of after-market ones in the car right now, bought from ebay. Light dispersion wise, its the same **** in my opinion but i'm running DDM 6k glare kits on them.
Fitment wise, one side is perfect, one side not so perfect but not really noticeable unless you know about it.
If your issue is just the chrome being peeled, just spray it with some chrome paint as mentioned already. I only went to aft cuz my oem Stanleys broke. With aftermarkets though re-seal them with all-weather silicone all around 360 degrees. I did that and never ever had condensation on them even when i spray the **** out of them at car washes.