but I think having the APEC door makes it easier to convert the camera to S16 down the road... or something along those lines, don't quote me though...
News to me, but then you are in the city of Duall, so maybe you folks have the inside track on Super 16 conversions on Arriflex 16S cameras.
At the point you are in your filmmaking career Matthew, the APEC exposure meter would not be a benefit. In fact, I can't think of anyone I know with an Arriflex 16SR who uses the APEC, and it came standard on those cameras. Visual Products removes them and replaces them with a video tap. Don't know if that conversion would work on a 16S with APEC, but maybe.