The SS is nice, but it's the Ultimate version of Doom which I don't really care for. Between the other two, I like Bowens head sculpt a little more (the mask), but I love the DST pose of sitting in the chair. If I was to get one now, I would go for the DST.
I agree I sold my BD Doomand replaced it with the dst, as soon as I do some painting on the throne my dst one is really gonna be the best statue for the buck