Each, or at least most exotic armor pieces have a theme. Now not all exotic armor is going to work for all people. And some of it might actually suck. I laughed when I saw Ruin Wings' bonuses. That's what Heavy Ammo synthesis is for. I'm not relying on heavy ammo drops when I need to break out the big guns. (They do look pretty sweet through.) But, if you feel like your class's exotics [i]all[/i] suck then, respectfully, you need to check that you're using your class's exotic armor perks optimally. That is, with the right subclass perks and right supporting perks on other gear. For example, as a Titan sporting Armamentarium (which I bought because I was jealous of the Warlock's native grenade spamming abilities), I'm ideally going to want to max out Discipline to get my maximum cooldown time as low as possible. Then I want armor with perks like "melee hits reduce grenade cooldown," "throw grenades farther," "grenade kills replenish super energy," etc. Since my melee in this scenario is feeding my grenades, I want my Strength up there as well. If I could manage to get "faster melee speed" on this armor set as well then so much the better. If it were possible - need to look into this - try to get "grenade hits reduce melee cooldown" in there for maximum synergy. It might be a good idea to use weapons with Grenadier just to keep those grenades charging even faster. But hey, you can do all those things as a Warlock or Hunter as well. Sure, you won't be able to store an extra grenade, but if you can toss them out every few seconds anyway, what's the difference really? And the special and heavy ammo perks? It's only about a 20% bonus to total ammo carrying capacity in my experience. One extra rocket or another mag of machine gun ammo. A few more sniper rounds, fusion charges or shotgun shells. Not particularly game breaking in PvE. In the Crucible you probably won't get enough heavy ammo to take advantage of it. Maybe special ammo, but several exotics have that perk. EDIT: And the Armamentrium only lets you carry one extra grenade in reserve. If you're throwing them as fast as they charge, it won't matter anyway because you'll always be charging and immediately throwing, never building up to the second grenade. If I want to throw two grenades in quick succession, I have to [b]not[/b] throw the first grenade while waiting for the second to charge.