My husband is interested in buying a plasma cutter for serious hobby work. We have tried doing internet searches on what brands are worth their snuff and what models will allow him to use it with a computer to cut out silhouette type items. What kind of computer software is the most relaible for doing this kind of work. The plasma cutter would also be used as needed for house and workshop projects (one of the first ones will be cutting galvanized corrogated sheet metal for use on a wall in our guest room). Please lend your expertise and experience with me. Thx.