Mig welder questions

Gas welding will expand your vocabulary if trying to weld outside in any kind of breeze . That is where the flux wire works better. If your in a shop with no breeze the gas welding is great. I believe most gas welders can use the flux wire. Check on that, then you can use either and not be limited.
Yote
The wind problem is over exaggerated I think. Turn up the gas and shield it with your body. Usually is sufficient.