I find it hard to believe that week after week Gjallarhorn is the most dropped exotic, yet it's the most coveted exotic. I have done the nightfall 3 times every week since launch and still don't have a Gjallarhorn. I'm not complaining, as I have made do without it, and I still enjoy the game even though I don't have it. I just think it's odd how it's exotic with the highest drop rate according to these polls.