I prefer the neck shot by far on hogs. However, a lot of my shooting is at night, or ,after that first shot, at running hogs. That is when I go for the bigger target of the shoulder.
I have not tried the other bullets and they be just as good. The brain on a hog is a pretty small target, so unless I am trying for between the eyes (you can see at least one popeye in the bunch), I go for the neck just back of the ear.