The only set to have both first edition and regular copies of each card
The ultra rare holo Omnimon (15 power) seems to only be inserted into Asia versions of D-Tector series 1 booster packs. It’s not completely sure at this point, but makes a lot of sense.
Holographic versions were inserted 1 in every 3 packs. They kept the classic “S” symbol found on Digi-Battle foil cards. There were no holographic versions of the gold text cards.
DT-17S
DT-25S