Personally, I'd use the Rocker Helm in PVE for the extra damage, evade rate, and aim rate against monsters, and Hookah hat in 1v1 PVP to keep the opponent in the air. If I had to choose between the two, I'd go with the Rocker Helm since it's so much more versatile, and as a Trapper, you have many other skills you would be using besides AAS. Unless you prefer AAS in most situations, Rocker Helm is probably the better choice.