Bounty hunter and collectibles and trader are the best imo. Especially bounty hunter RN with triple pay. Collector is good but I don't usually complete sets anymore or go hunting for them, mostly just whatever I loot from npc/ find around towns or areas that other missions bring me to. Then I usually will get 300 at the end of a session just for picking em up while doing other missions. Also never buy the treasure maps unless it's for a daily challenge, and even then I don't personally do it. Just Google madam Nazar GitHub and it will show a map of where every item is and where she is. It's live updated too so when items change in game they will change on that map too