Savage stock tires hook up a lot better in the snow than stock maxx tires as well. Or, some imex soft compound tires. They work pretty good too if you want to stay light weight, go with the imex soft compound swamp dawgs. Just don't do a lot of jumping on concrete since they are so soft, the rim will cut them when they are pinched. But they hook up pretty well in the cold.
Snow chains are an alternative. I'm pretty much for whatever works. And it's nice to hear and see you actually running those things. It's a hell of a lot more fun than looking at 'em, ain't it?