Keith,

I have a wood workshop (in Belgium) and use exclusively MoI for designing and manufacturing (both with power tools and CNC). I have Sketchup on my computer for when clients send me .skp files, but it is not a very user friendly or intuitive program, compared to MoI. The only drawback of MoI (as mentioned before) is the lack of dimensioning and annotations, but that is coming in the near future as I read somewhere. And you can export Moi to .skp and add the dimensions there with the free SketchUp Make version.

MoI is easy to learn, cheap, simple yet rather complete, and one can always upgrade to a "real" CAD program if the need for something more elaborate comes up.

cheers
Wim