The triangular ones seem more practical for a uniform (easier to manufacture and sew onto a sleeve,) B and D would be good if you're looking to play up a Nazi-like image, otherwise I'd say C.
I could probably decide better if I knew what/who they were for, but I'm guessing these are for bad guys or something.
They all look pretty Nazi/Eye of Providence inspired, save maybe F which is just a traditional inverted pentagram. I guess F then, since I don't find SS stuff impressive.
"You tell yourself to just
enjoy the process," he added. "That whether you succeed or fail, win or
lose, it will be fine. You pretend to be Zen. You adopt detachment, and
ironic humor, while secretly praying for a miracle."