I agree with Joker, but for a different reason. I've done a fair amount of lathe work (with a 7x10 mini) and mill work (with a drill press), and IMO, the micro-mills are too small for hobby robotics. I think they are better suited to model makers. I think the "mini" size (like the Seig) is better suited.
The bed travel is a bit too short and especially the motor HP is too small. The small motor forces you to take very light passes on some materials and it takes forever.