I have a problem with the cnc thing, they are no more accurate than an old style machine tool, just more flexible when it comes to swapping from job to job,
And a cheap machine operated by a good tradesman will beat one every time on accuracy , its the man operating the machine who has the skill , not the machine , ok its easier on a good machine, but that's about it .
I know a little of how accurate these things are as I have reconditioned both types