Well, I don't think I have the super power of strength, so ripping out their throats is out of the question and practically impossible unless using some knife of some sort, but that seems very inhumane and inappropriate. But if it must be in a violent way, I suppose choking and watching the light in their eyes slowly fade away would be the best option out of everything. Then walking away and setting the house to flames, being sure that the body is burned as well.