I'm using a Centroid Allin1DC board. It sells the tool height and probe w/ software option for $2.4k, which is as much as the board itself! I don't need that level of accuracy, so I'm perfectly content with a random Chinese probe and tool setter for $200. It's not clear though, if you need to buy some software package to get the third party probes to work, or if that's even possible. Has anyone used third-party probes for Centroid Allin1? Do you need to buy anything from Centroid to get these to work?