Do you have some inside knowledge on the refurbishment process or are you just guessing?Reburbished are used or DOA birds that returned to the factory or certified technician for repais. It should go through QC and have some sort of warranty. Used birds is a bird that used to belong to someone.
Personally I would go for the Pro. All of them are good birds, but the Pro has the 4k camera, lightbridge tech for flying further and down sensors.
P3S and P3A are both 2k cameras.
P3SE and P3P are 4K.
DJI says that the refurbished products are those that are returned and subject to assesment of performance before repackaging.
Repaired DOA birds don’t seem to make the cut and this is something that DJI has denied when I enquired directly.