I have The Devil You Know, Last Word and Thorn. Thorn is a good HC, but compared to Legendary HC's Thorn hardly can match. Being that Thorn is an exotic, there should be more of an advantage or perk that makes it more powerful than a legendary. Thorn barely makes an appearance in my arsenal, unless I'm on patrol. I currently use TDYN for PVE and Last Word for PVP. Just need Hawkmoon and Fatebringer for my HC collection to be complete.