In my case I do best with more mature models (30+) and with galleries that start fully clothed then progress to nudity, toy play, even a little hardcore on occassion.
I don't notice any significant difference in coversions between pics and movie galleries.
MY top 5 coverting leg/nylon/lingerie sponsors are all well past their teens.
Lady Sonia
Passion UK
Desirae - NaughtyAtHome
Roni's Paradise
Nylon Sue