Two weeks after attending the class my wife is still talking about how valuable it was. I suggest attending a class regardless of the brand or type spray you purchase. Its easy to say, "well how hard can it be to spray someone?" but we look down on folks who have that same attitude about firearms. A trained and practiced person is always safer than one who is untrained and unpracticed.
I am glad to hear that the class made a difference.
I will look at offering them again soon!