Well, as a fellow Hand Cannon player on PS4, I have to say you'll probably like Hawkmoon a lot. I don't think I have nearly as many kills racked up as you, but that's my two cents. Thorn's DOT is definitely a plus against weaker enemies though. Just tag them once and watch them drop. My chosen back up is the Lord High Fixer, but others swear by The Devil You Know. I haven't gotten The Last Word yet, but my buddy who has it continues to be jealous of my Hawkmoon so I'm not too sure what to make of it. He's a big Thorn user as well.