I will also add that exit holes and tracking aren't much of an issue when you shoot neck shots. Granted, I understand that you can't get a neck shot in every circumstance, but in most cases at moderate yardage, if you can line a up a shoulder shot, you have time to line up a neck shot.

I used to shoot shoulders because I thought that they wouldn't go very far if they didn't go down right away. None ever went far but after shooting a couple that way and ruining perfectly good meat I started to shoot behind the shoulder. Worked pretty good but it wasn't uncommon for deer to go jump right in the thickest briars around. Not hard to find but a pain to drag out. I switched to neck shots and haven't had a deer take a step after getting shot since, and I don't lose much meat.