Thanks John, no that's ok, appreciate the offer of providing comparison shots though.
It was just that when I first noticed it flying low and slow, I thought something might have been wrong with my cache or installation, and then when I saw the difference in size between the MSFS marketplace version and the Orbx direct one, thought maybe my marketplace one was not downloading the full package for some reason.
I love the add-on, think it looks great, and I'm sure there wouldn't be much difference between the quality of the 2 packages. My last query was more related to wanting to use Orbx Central to make my future purchases, and I would like to have the Sydney one in there as well so everything Orbx is managed in the one place.