well, rc cars are boring..
i more like it 3D (electric rc flight).
But we use the same motors... (nearly).
You know i bought the proxxon IB/E and it was expensive, but worth the
money...
I will use it when i actually get to building. I plan to mill aluminium and
plastic too so
i might one day buy a bigger machine which also takes thicker shafts.
But i don't regret buying the proxxon, it is much better than the cheap
"dremel clones" i had.
I use it very often.
you can really use the cutting wheels with it (for cutting, not only
breaking them apart)...
there is a page with ready made software if you need it..
http://www.rcmodels.net/cnc/soft/soft.htmlst