G36E, and the L96 sniper.
The AK was one of my favs until I tested both the AK and the G3 out, and realized that both were 2 to 3 shot guns, but the AK could be a bitch with recoil. Also, the G36E comes with a great scope, it has the same magnification as a sniper, all with the same price of the AK 47 with a scope attached.
The only way to go with the AK is a higher suppressor (the third one, best one, i don't know the exact name) to help reduce the recoil. Then, the AK becomes a better choice of assault rifles.
Also, the L9 because it's one shot, but the MSG could be close to it, only because of the accuracy compared to the L9.
And I have to admit, for a secondary weapon, the M5 Military shottie is doin pretty well, even though the reload is long. It's great to have a decent backup when your primary weapon runs out, and even with a cross air, the L9 has shitty aim without the scope being used.