what budget do you have ?

Also bear in mind that you'd be better of buying a half dozen cheapo replicator clones or duplicator I3's than one ultimaker or 1.5 cel robox's

If the art department is involved then you want something with dual extruders - or at lest one extruder that can handle two materials at once.
Artistic models will require more support than engineering models - in my experience anyway.

But at the end of the day it's down to budget.
Give us a clue :-)