Ok, are you interested in other's opinions, or are you trying to stir the stink?
Did you leave out 223/5.56 (probably the most common after 7.62x39) on purpose?
Best for what? Home defense? punching paper? Hunting for meat? Hunting predators (4-legged)? Hunting predators (2-legged)? Military duty? LE duty?
Best in what gun? AR? AK? Short action bolt?
I'm just thinking you might get better discussion if you harden the target a bit (pardon the pun).
As for me, I just got an AR in 5.56, but will eventually get another upper/caliber more suitable for deer/pig hunting - so I clicked this thread to get some feedback of my own...