I think a heart lung shot is the surest shot and I prefer it over all others. With that, I'd take a neck shot if that was all I had.
I would not suggest a neck shot for a novice however. The margin of a clean kill and a wounding shot is just too small. Above all else, we owe it to our game to give it a clean humane kill.
"He who laughs last, laughs dead." Homer Simpson