6-3 Activator , since i am comfortable with the volume already on my Quadra - five and Hell fire. 37L and 36L (all completely different boards) the dimensions are scaled down tighter than the DOM and its tail is pulled in allowing more play, tighter turns on the waves. I can say this will be my daily go to board.
the 6-4 Dominator I originally got at that heavier volume to be a "groveler" plus board for mushy powerless crowded waves, made it easy on me to paddle into most everything thats not too hollow. I see it as more of a cruiser than a performance board for me.. (most people would have gone to a Sweet pot, Baked Potato, Potatonator or addvance) the wider tail on the DOM makes great heavy carving sprays, but not tight enough for me like a Hell Fire does and now the Activator. I would have consider a 6-2 Dom, but since the 6-3 Activator, I am pleased with the new board.