For main story stuff like the final phase of the final boss, I like to wear the Champion's tunic and hylian trousers with the master sword and Hylian shield so they show up in the final cutscenes. For the first phase of the final boss and all of the divine beast bosses, I wore the ancient armor...
Until BotW, I have never really liked many open world games, simply because most of them have nothing to do but little fetch quests. But BotW is the first one that I have really liked besides Shadow of Mordor (the nemesis system saves that one).
3:Savage Lynel Crusher (perfect for killing lynels and getting more of these)
2:Royal Guard's spear (nice for horseback combat and it just looks really cool)
1:Savage Lynel Bow (Powerful and sometimes has 5 shots)
I like them all for different reasons. I like rusty weapons because they're a wild card if you throw them to a death mountain octorok. I like Royal Guard weapons because they're powerful and black. Lynel weapons look awesome and they're a fun challenge to get, and even more fun to get when you...
I use Revali's gale all the time because screw climbing. I save Mipha's Grace for huge battles that make it worth the 30 minute wait. I use Urbosa's fury when I'm surrounded by stronger enemies. I always have Daruk's protection disabled.