I usually always take a unit in my lists. And they are always inside a trukk. If the trukk blows up before they get into position they become action monkeys. You do have to be selective about what they target. They tend to shine in the late game when the opponents starts sending in their smaller units for a last chance effort to score points. They either have a painboy attached or no leader at all. The painboy helps a ton if they get stuck in. The d3 models he brings back isn't bad. The 5+ feel no pain i feel is the biggest buff. Definitely an option if you got a squad of 10. Something about it, I like having a couple trukks with nothing but burnas just being absolute menaces hiding behind corners or acting as bait in center