Why choose? My first playthrough was as a Bearbarian, level 5 druid (moon)/ level 7 barbarian (wildheart). I used bear rage in the first round, attack-attack (using special moves like cleave or lacerate which won't be available in bear form) second round wildshape and beast attacks. Resistance to everything but psychic and plenty of new hp pools to pull from and Lunar mend to use those spell slots to keep healing while attacking. Particularly once you can use the owl bear form it gets nuts what is possible. And the bear wildheart option at barbarian 6 made my carrying capacity incredible.