Funny that's my Iron Man collection so far. I have The Mechanic already, Iron Patriot is on the way, Mark XLII is pre-ordered and should arrive soon, and I'm on the fence but leaning towards getting the Mark III and the Silver Centurion. At the moment those figures will fill my Iron Man fix. The Iron Whiplash is cool but too expensive and pointless sort of without a Mark VI and War Machine.
I just didn't want too many iron-men, all die-cast seems really cool for "ironman" but sone of these other releases look really cool. But I think three armors, not to bad huh? Especially since I'm an avid batman collector!