I've had no duplicate exotics (excluding that I chose to buy 3 Icebreakers), I've had 9 different exotics Nightfall Reward - 4th Horseman Purple Engram - Suros VOG Chest - Universal Remote, Truth Exotic Bounty - Super Good Advice, Pocket Infinity (because I won't do crucible won't get others from bounties) Xur - Icebreaker, Plan C, Dragons Breath If Xur sells something I don't have I buy it just to have it even if I don't plan to use it, with the exception of No Land Beyond because I just started playing when he sold it and didn't want to waste coins at that time on a primary sniper rifle.