I don't have a lot of hair, but the hair I have is very strong.
Even shaving my face is very painful sometimes. My skin is really sensitive to creams etc, and have had a few experiments go wrong. I really hate stubble on my balls and cock. Sick of rashes and irritation I have developed a method of my own.
I have actually been plucking out the hairs! My balls are completely smooth, and there isn't a hair anywhere on my cock. The regrowth starts again as soft new hairs, so I have found this is the best way for me.
I have a medium/high pain threshhold, and a lot of will power. The pain and discomofrt of alternative methods makes this the best option for me. It is easier after a hot bath, breathe out as you pluck each hair, pull in the direction the hair is growing. Because I don't have too much hair it actually doesn't take long to maintain because the hair takes a while to grow again.