I have finished up a 5th rhino for my Iron Hands: 

I've gone with a different dozer blade and a havoc launcher on this one as it is for the Graviton Shredder Support Squad so it stands out and I don't lose track of them. The Havoc Launcher provides a bit of anti-infantry firepower to a squad which is very anti-tank focussed. As I can only run the Graviton Shredder squad in a Head of the Gorgon list, this will only get a run out then (unless I buy some plasma guns or something to put in it).