The versatility, ease in placing parts. Not much! The ability for other machines or software tools make up part files very easy! This product solves most problems but sometimes there are too many options when creating an order which makes it more time consuming then not using this system. Do your homework regarding cutting speed requirements and try out all aspects before deciding on what works best for your application. We were able to cut materials faster by having multiple ways to create our machined components. I have been using othertools for years, mostly in my personal projects but also at work. It's very easy to use with some great tutorials. The free version allows me to do most things i need without spending too much money! If u want more functionality or customization look into the pro versions. They are expensive compared to similar software (dwg2cad). Easy to learn how to make basic parts using this program. We needed something quick and simple to create CAD files for our machinist.