I really can't get over how great the 20" wheel with 33" aggressive tire combo looks(ie. littleBeast). But the expense... I can't find a 20" wheel/tire combo for under $2500, I could get a full set of 18" wheel/tires including a matching spare for less than that.
My wheel/tire combo = $2480 (everything including shipping)
You just have to keep looking and looking and looking. Jordan Tire did $1155 shipped for the Nitto Mud Grapplers for me, I found them on eBay. JD wheels did the 20"s shipped for me for $1325.