Pro tip: if you want a piece of armor for a certain class, buy engrams on a different class than the one you want the armor for. I.E. You want the ram so buy engrams on your Titan or Hunter. I'm not 100% that it works but I've heard countless people say it does and that's what I do and it works every time. I'm not sure if it's all a huge coincidence or if it's Bungie's way of encouraging us to try all three classes. But if you've tried everything else, it wouldn't hurt to try this bc you have nothing left to lose.