I haven't bought a Chinese machine but I would say that the hardware list isn't at all bad.Mach 3 is old but still has many adherents and some of the supplied versions are the demo version or not entirely the same as the original.Any reason why you wouldn't want Mach 4?
If cost is a factor,don't forget that you still need to add CAD and CAM to the process in the event that Artcam is less than your needs will dictate.