Is there a reason why most builders seem to use a shade 5 goggle for brazing and clearly a welding helmet for welding? My helmet has a shade 5 setting that I was thinking I could also use for fillet, but mostly wanted to know if it was a safety issue? Any other concerns? Flux fumes gumming up the helmet? I plan on doing about 50/50 between welding and brazing. Also any recommendations, I don’t mind spending some of the gear really does work better