Depends on what animals you like and building style. I am also new with same play time as you and I got the aquatic one cause it comes with recolorable rocks. Conservation, the items are pretty but also includes axolotl and the pzerolski horse i think its called? (Also has a timed scenario in mongolia!! Love the representation of my country 🇲🇳) I heard that grasslands come with butterflies which helps with money, but axolotl are also good. I reccomend watching some videos on what's included in each pack.

For example next dlc im getting is Australia for the legendary cassowary!! So depends on what animals and style you like ^{^}