What Pinata is the best to buy?

I have gathered enough gems to buy a pinata and I'm not sure which one to purchase. Which one is the best? Since they are world related, technically it's like I'm asking which world has the best plants.

I have gathered enough gems to buy a pinata and I'm not sure which one to purchase. Which one is the best? Since they are world related, technically it's like I'm asking which world has the best plants.