I'm completely with you guys on the common model for everyone.
I spent more time trying to find the right model and getting it the way I wanted than on the actual Keyshot work in the Engine contest.
I'm not against post edits in Photoshop but can understand why some would feel that way and would be open to that criteria in a contest, except there's no real way that it could be governed is there? How could you determine whether someone has or hasn't done a multiple pass composition or a lighting tweak?
...I agree too, should be only Keyshot power (most of cases don't need afterwork with photoshop), and next contest with the same 3d model for all as i asked on forum at the end of 2012 watch contest.
Keyshot works don't need postwork...is powerfull

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And to determine if a keyshot user used in his keyshot render image a multiples pass composition with photoshop or other software, or if he used some trick..everyone at the end of contest must send or post a keyshot render image and the relative keyshot bip scene...soooo simple to verify by contest judges; and i think also after the end of a contest should be helpfull to all, to post the bip winners scenes , ..everyone will improve keyshot experience.
Regards