The harbor freight one I used constantly has power to the wire even when the trigger isn't pulled. I like to set my wire on the spot I'm going to weld and pull the trigger. You can't do this with a harbor freight mig welder. It will spark without the trigger pulled. Find a used miller, Lincoln, Hobart, or similar.. You should be able to get one for 200 or less. If you want to do bigger stuff get a 220v mig not a 110v...Keep in mind where youre going to use it. I can use mine anywhere theres 120v outlet but 1/4" thick steal is trickier. but with a 220v mig its cake...but you have to have a 30 amp source. miller makes a welder that can switch from 120 to 220 automatically.