IMO armamentarium is one of the best titan exotic armor pieces. And believe me I love me some ruin wings. Pretty much never take em off. Even if they don't work always they look -blam!-ing AWESOME. Had mine since right after the dlc dropped and have loved them ever since. Still though- arma is clutch as hell. Double nades and more heavy and secondary ammo. PvP I use arma always. High discipline with it equals lighting grenade spam on cap zones. Wish it looked less obtrusive though.