I bought the small Victor portable unit and couldn't be happier. There were a ton of options and I got tired of shopping around so I went to the welding supply and bought it. I used the oxy/mapp torch for my first frame and it was a huge pain and very exspensive. Using that torch contributed to some bad habits which I realized when I started using my oxy/act setup. I have finally lined up a true workshop/tinkering area and will rent larger tanks once I have it all setup but the small tanks are fine for a random frame here and there.