Ofcourse all the raid guns. From non-raid legendaries I'd keep High Road Soldier since that was one of my first legendaries and to be honest it is probably one of my best legendaries to date. Hand Laid Stock and Firefly make it a killing machine. All the rest of the legendaries I have are easily replaceable, I mean sure Hopscotch Pilgrim is a beast right now but no doubt there will be a better alternative in The Taken King.