I'll agree with everyone else that Resilient wisdom is the way to go, especially in a game where the DM likes to use wisdom saves. One of the major weaknesses of a barbarian (and fighters) is wisdom saves - especially since the +1 difference in strength is usually unnoticeable next to reckless attack. If you aren't regularly using reckless attack that would be another question :)

You'll also likely want to pick up Great Weapon Master at some point since it synergizes really well with reckless attack as well.