Solo,
The biggest challenge I found to Oxy-Acet. welding is that of dexterity. One hand is stupid, the other knows too much.
Actually, practice makes perfect, but Mig really is the way to go for the beginner or casual do it yourselfer, IMHO.
Here are some personal favorites websites - some welders are brand loyal, others find a machine that can do what others cannot.
Lincoln:
http://www.mylincolnelectric.com/Catalog/home.asp Miller:
http://www.millerwelds.com/main/ Hobart:
http://www.hobartwelders.com/products/
