For me, the double lung hit is a perfect non-eating meat destructo facto good place to send lead. I am usually hopped up on adrenalin, so most of the time this shot isn't always perfect, but dead deer none the less.
As far as the "head shot" being the best way to kill, only at the stock yards, maybe, I have no use for this in my hunting world unless it's a humane coupe de gracy.
Suit yourself young man, but every kill is different in some fashion.