I have a CAD program called TurboCAD7 from IMSI, it's a bit older (bought it in '97) and a free 3D game modeling program call GMAX which is also a bit outdated, both are still better than Sketchup IMO.
the whole "bought" part is something i would like to avoid... i have Solikworks 2007-2008, but its part of their programming that they quit working after one year...
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