I am welding 7mm Ali flanges onto 4mm Round Ali tubing... The big question is what MIG welder should I buy? I have done limited stick welding in the past so completely new to Aluminium. I quite fancy the auto set up machines and have a decent budget for a decent machine but only want to buy a machine for the task at hand as I have a lot of flanges to weld over time and won’t be doing anything else with the machine. I expect to pay for reliability and so am ruling out Chinese machines simply based on the consensus that buy cheap get cheap. Over to the experts? Thank-you for any advice provided...