The ability to use different types of tools for each axis, which makes it easier when you need more than one type of tool at once. There are some programs out there where you can only have 1 or 2 types of tools open at once. It's great having all your options available with this software as opposed to using multiple other machines. I wish they had an option to change from milling mode back into drilling mode so we could still do both if needed. This helps us save money by not purchasing another machine. We used to own 3 separate CNC Routers but now everything gets done here with just one machine!