@ Steve
Another big reason is that ketchup is the more easy free box modeling prog and becomes more and more powerful!
And it has behind it the Empire's Google! And the version 7 is coming soon ;)
Moi + ketchy = the zen modeling! in the first image Moi can be help because that is some rustic method but efficient ;)
By Silver Shadow
http://www.sketchucation.com/forums/scf/viewtopic.php?f=81&t=12513 Making of
here modeling is only ketchy ;) (render is not ketchy)