Cliff, Andy, I can only speak on behalf of Vector Art 3D but I can assure you that our model is unique even though we added it only last week. We have been working on this model for several months (based on requests from customers) and the pieces were sculpted in clay as individual groups of 2 or 3 people by an artist who does work for us, these pieces were scanned with a Picza and emailed to me. Then I combined them in ArtCAM Pro and did a significant amount of additonal work to sculpt and build the other elements of the finished model.
Neither Vector Art 3D or any of our artists created the one on the 3D Model Club website and there is no affilitation between us so I would say that theirs is unique too (our artists are exclusively contracted to work with VA3D for clipart even if freelance for contract work). Our model is based on the Da-Vinci painting and as this is a pretty standard piece of imagary even based on different artists/sculptors versions of the smae thing. So I would guess all Last Supper renderings would be similar iin layout and content although different in execution. It is hard to see on the low res images that it is possible to post here but if you compare the models there are significant differences not least of which is that ours uses a very low depth given the amount of detail in it (I would guess that Jimmy's model is only around 0.5 inches deep even an 24 inches wide). If you would like to email me I would be glad to send you a high res image of the Vector Art 3D model so you can compare the two: jab(at)carve3d(dot)com, or download our free Viewer and the Free V3V model from the website so you can take a look at it: http://www.vectorart3d.com/store/index.cfm?q=supper . Please ask us if you have questions on our artwork in future rather than suggesting piracy as I can assure you all our artwork is unique.
Thanks,
James Booth
Vector Art 3D, Inc.