Plasma is a newer technology with several clear advantages over the oxyfuel. First, plasma cuts any type of metal which conducts electricity. Stainless steel and aluminum are impossible to cut the oxyfuel, while plasma will zip right through them. Second, plasma cuts much faster due to a narrow width of cut (precise kerf). Third, it has a narrow heat affected zone. This way the surrounding area is not warped or has the paint damaged. Fourth, plasma uses clean dry, air so that cutting is less expensive, cleaner, and more convenient.