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

Hi, here is the link from Amazon US store: https://www.amazon.com/gp/aw/d/B0B68L62JY

It is indeed the same ID as the below. If you have issues with installation, Whitestone has warranty replacement which they say covers installation issues, just in case you need it. So far, mine still looks good though I did have a tiny bubble appear near where the crease is, after I folded it several times yesterday. However, it's smoothed itself back down today so I think it's a success. Fingers crossed it stays that way, but I'm still happy with it.