Wide Angle Lenses Difference On Add On Wide Angle Fish Eye Lenses?

Difference on add on wide angle fish eye lenses? - wide angle lenses

What are the differences between 0.25xy in 0.35x fisheye lens?

What do you think is better? What should I pay to get attention to them? If you add more, the wide-angle lens that is better than these two, please tell me. Thank you.

Thank you.