Dennis -- I have the Bobcat as mentioned before plus a 460 Amp Miller Tig / Stick BUT I bought the Century MIG. When I got the MIG I had tried using a 175 Miller and it was crap! I think they have changed them since then. The 175 I tried to use only had prest adjustments for the heat. I was trying to weld 1/4" steel and one setting was to cold and the next "click" was to hot. My Century is infinite on the heat and speed plus it has a "spot" , "stitch" setting too. Century Electric has been in biz a long time. The only time I couldn't walk into my local supply shop (60 mile round trip) and get what I wanted was with my spool gun. They didn't carry the type of tips it used so I had to order them from BRwelder. I used a Century 135 MIG before I bought mine and I liked it enough to get my 225. I've welded 1 inch thick aluminum with the 225 before I got the spool gun. A factory rep told me that it wasn't built to weld 1" aluminum and I shouldn't be trying it. I told him if it wouldn't do it then for them to come and get it out of here. It's still here! If 225 amps on a .045 wire wont burn into 1" aluminum then what would !