How to choose the correct make-up sponge?

Round small sponge:
Suitable for 2-way cake, powder or liquid foundation

Oblong small sponge:
Used for corners, small areas to create a cleaner finish when applying foundation. Used to replace our 'finger' actions

Triangular big sponge:
Corners of the sponge good to reach corners of eyes, nose and mouth to create a cleaner finish

Round big sponge:
Good for applying large areas like body. When used to reach corners or details on face, just fold into half & use the 2 corners

Ladder-shaped small sponge:
Its many small corners are good to reach details or corners of face to create a cleaner finish

Triangular small sponge:
Usage similar to triangular big sponge. Meant for disposable use. Clean & hygenic. Buy in budget big packets. Good for lazy people who do not want to wash their sponges

Small rectangular or round sponge:
Used to 2-way cake or liquid foundation. Meant for disposable use. Clean & hygenic. Buy in budget big packets. Good for lazy people who do not want to wash their sponges