Just subscribed to this news group about a week ago and have enjoyed reading the posts as it is very helpful to a beginner welder such as I am. I have an old '70s Miller Thunderbolt AC box that I've been trying to join 14 - 12 gauge mild square tubing with - with mixed results. Today I test drove a neighbors Millermatic 180 with .030 wire and 75/25 argon/co2. What a dream - now I'm shopping. Miller no longer makes the 180 but the Millermatic 175 appears to be a much smaller machine size-wise. What replaced the 180? Is the 175 comparable? What is the main advantage to the rather large leap to the Millermatic 210? I guess what I'm getting at is - will I get the same results with the 175 as my neighbor with the 180?