Hey SchattenSpartan - Reviews have compared the 'D' Tristar and Dragon super kits and what I recall the Tristar kit had the right gun length and better turret however the tristar hull can be hard to fit right. Enclosed link on the new Dragon 'D' 6779 - http://www.missing-lynx.com/reviews/german/dml6779reviewcs_1.html
Dragon 6779 - has the DS track, the hull is correct for early D, engine deck and tropical stuff is correct. Have an after market interior which test fits the low hull / deck.
I have the earlier Tristar 'D' (015) which is harder to build (lower hull) and does not have the turret storage bin, likely build it for either France or Poland.
Have several after market PE for both the Dragon D and Tristar D - extra bolt on armor plates etc. The Dragon IV Ausf. E Vorpanzer has two lower hulls with corrected front drive. So when I get around to building it I will likely use it with the earlier kit.
I've thinking the newer Dragon Smart kit will build closer to the DAK vehicle ... I've build two / three of the Dragon smart kits (Pz III Ausf. J initial and late and Pz I and they didn't need as much work to build up compared to the older DML kits from 1990s (Pz III Ausf. G - Pz IV Ausf. F1) Armor86