Tire Snow Silverado 2009 A Good A/T Or M/T Tire?

A Good A/T or M/T Tire? - tire snow silverado 2009

I have a 06 Silverado Z71 Crew Cab w / 6 "Pro Comp lift. Right now I'm running 325/65/18 Nitto Terra Grapplers. Rim decent, but not good in mud. I Moved to Colorado and Texas, I am loking for one looking for good and aggressive, the tire is good on the street, or in the good in snow and slush. Has anyone any suggestions? "I looked at the Nitto Mud Grapplers, BFG M / T Km2 Enterprise Way Kumho M / t is three As better? If you know of a better tire, please let me know.