Stock tires on a ram 1500 - need two more or 4 different?

I am here in Utah and usually run a good pair of all seasons or all terrains. If you get out in the dirt, mud, and snow get some good AT's . Some good brands are BFG's, the Wranglers and I also liked the Hankook Dynapros's. I have heard Nitto's are a good AT but have no first hand knowledge of them. I do prefer to buy my truck tires in sets of 4 especially on a 4x4. You can always sell the other two to off set your initial cost.