The pubic hair and the hair at the base of the penis hurt way more than ball hair. At least for me.
I have tweezed recently my balls, but I always stop at the base of the penis (I still do shaft hair though) and the pubic area, because the hair is more and the pain is greater.
If anyone can inform us if the pubic and shaft base area are “sugarable” I will give this a try.
It takes time and devotion.