Only one for my needs: letters painted on walls. I have Musuem clients that insist on it. They used to use a screen printer, but he closed his shop so now their is a huge void as there is not many vendors that do it. I do vinyl for these clients, but for a bulk of their jobs they use screen print, so my choices are: let the business pass me by, learn screen printing, or learn this new tech. no options seems great. It can also do small lettering which is a plus for those 12pt serif font jobs when they want a label painted direct no the wall.