Which one is worth the money?

Today we are back out on the trail and trying out some camera gear. In one corner we have the Zyihun Smooth Z 2-axis gimbal and in the other corner we have the Moment 18mm Wide Angle Lens. Which one is worth the money and which one is not. Let's find out!
Camera: iPhone 13 Mini
Video editor: Filmora 12
Music: Epidemic Sound
Microphone: FDuce SL-40