Hi,
We currently run Projet® 660pro , ProJet® 4500 as well as ProJet® 3500 HDMax.
I can confirm bot Projet® 660pro , ProJet® 4500 are have almots the same results in quality..
However used materials are different and their price too. I can say depends on purpose of using.
Next week, I will try to print the same object from two different printers and then upload some photos.
Also dear matey Wishgranter, you still keep it secret but thanks to Lord I sorted out the color issue long time ago...