Well I got a Lincoln 180 HP on Monday. It was 160 bucks cheaper than the Miller at KMS. I used the difference to get an adjustable auto darkening helmet. KMS advertised they are a gas fill station and sell tanks but the store in Victoria has been waiting three years to start filling so I didn't get a tank or gas. Any suggestions on how large a cylinder for a casual user? They said the gas place in Victoria only exchanges and only one size. Gotta be someone who will fill whatever size cylinder one has? The welder specs at 20 amps input but has a 50 amp plug. So did all the other welders I looked at. I was going to cut off the plug and put on a 20 amp but the store said it would void the waranty. I bought 150 amp receptacles for my garage and car port. Now that I got it home I see I should have just rewired it with a 20 amp cable/plug that I could switch if I needed to take it back. How many units of gas does one use for every hour of welding?