I hit rank 5 on Thursday night. Now, granted, I've mostly been playing Halo 5 and Warframe since then, but I have played Iron banner enough to get 5 helmet drops, a ghost drop, and the titan mark. Thats it. Only the ghost was any use, as it dropped at 314. I got one helmet over 300. I miss the days when we could buy Iron Banner gear with glimmer :/