Well.... the best depends on what you need the pad to do.
The Gorilla Pad
is used mainly to help stop grass coming up and growing through your swimming pool liner.
The Gorilla Pad is a thin, felt type of product.
The Happy Bottom Pool Pad
is a foam type of product. This type of above ground swimming pool padding
is great to use if you're setting a swimming pool on concrete or have solid ground and are more concerned with getting more cushion.