Fuji DVD-R with 851S scan results

I bought some 25pack Fuji DVD-R upto 8x. Made in Taiwan.
The code is ProdiscF01.

I first burnt them with the original BIOS GS08 at 2x max speed and read it with 2x speed.

The second burn was with the latest GS0K BIOS at 4x speed and read it with 4x speed.

How does the scans look? Are these discs keepers or should I return them?

Thanks.

look well within redbook standards of PI=280 PIF=4