I've had both. IMHO I would lean towards tbe AK. Not saying you couldn't build an AR to out perform an AK, but, if you take the basic off-the-shelf rifles, the AK is a bad dude. Reliability, cost of ammo, knock down power, all point to the AK. I am no pro by no means, but when I bought my Arsenal AK before prices went crazy (for $750), I had a basic Bushmaster (around $800). AK to me is the champ. Like I said, just my opinion.