Question 1

Are the Verbatim 25GB BD-R discs compatible with older Blu-ray writers?

Accepted Answer

Yes, Verbatim BD-R 6X discs can also be written on 4X writers.

Question 2

What is the maximum speed supported by the Verbatim 25GB BD-R discs?

Accepted Answer

The maximum speed supported by the Verbatim 25GB BD-R discs is 6X.

Question 3

Is this HTL, or LTH?  How does one tell?  What is the difference between this and the 98497V (with a V) which costs $8.00 more?

Accepted Answer

I am pretty sure these are LTH. The difference between the two is the composition of the recording layer. The more expensive variety is a sputter coated inorganic layer, while the LTH is a spin coat organic layer. In principle, the inorganic films are more robust. In my experience there isn't a visible difference. You probably want to keep the LTH disks away from bright sunlight (UV). I usually use LTH

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