So far i used king 2.0 variable shade and the fix shade 11 i also have the 10, but havent used it yet but i must say the 11 and variable are worth the money the clarity is just as good as the lincoln 4c viking, i had 1 sensor blocked while welding and i didnt flicker while welding stainless, these do seem like versitlie welding lenses. Only had them for a couple of weeks so their still on trial.lol.