Weapons
Savage Lynel Crusher as it's the highest damage output with certain ones
Guardian Axe ++ similar reason
Giant Boomerang because it's goddamn hilarious to see monsters go flying from it.
Bows
Golden/Phrenic Bow for those sweet close up shots on dragons
Savage Lynel bow for the...
Guardian Axe +++, S. Lynel Crusher and Guardian Sword +++
I feel like the elemental weapons are overly situational as in you don't want to waste them whacking things to willy nilly.