Quote Originally Posted by leadinglights View Post
Look carefully at what you want it to do. If you want to do any production PCBs - even for very short runs, then pCB milling is a non starter. If you are doing prototypes and you can afford to wait a week or two, then again it isn't worth it. If you are doing prototyping at low speds it is better to use Veroboard or similar techinques.
I want to produce prototypes and one-off units for pilot installations. Thereafter, a fab shop will make the boards in larger quantities. Waiting even a week per iteration could easily become difficult to plan for. Leaving aside design-errors and oversights, even a change in the enclosure choice, or the fascia layout, could require moving PCB connectors or mounting holes.

The boards typically incorporate RF comms and ADCs, so breadboards/veroboard only go so far (though this is where I always begin).