It's a bit pricey, but you might want to look at the Haas office mill. The advantage is you get a real Haas CNC control, but maybe that would be more for people who already have a full sized Haas machine and experience with CAD/CAM software...
Otherwise, there are many people out there milling wax with Roland machines who are pretty happy with them. Their controls are PC based, I think. Here is their specific-market jewelry model: