Brad,
We mainly drop-cast our miniatures. The spincasting machine usually flattens the castings so they need to be sculpted having that in mind if you want to have the correct volumes. This is the best way of casting when you have a large production. We plan this for those sets that are painted in several versions and that have a band too, so there will be many castings needed for that particular sculpture.
But as we produce upon order and don't keep stock, the usual castings for a week might require one of each of many different sets, and it's more complicated to spincast figures from different molds on such small productions. Our caster manages to drop-cast with a close quality control. We don't need to re-size the sculptures this way, and we can always cast one set or one figure at any minute without having to set everything to spincast.
Ana