What is the difference between the following 2 protectors offered by Whitestone for the Z Flip 4? I only ask regarding the internal screen protectors' quality difference.
$16.99 PET film: https://www.amazon.com/gp/product/B0B68L62JY

$9.99 TPU film: https://www.amazon.com/dp/B0B68KSQW3