Two references for 25-discs cakeboxes : 43343 ("Scratchproof") and the more expensive 43429 ("Crystal").
Both are sold in Europe as "Datalife Plus", both are supposed to be super AZO and both are supposed to be scratch resistant.
As I've never tried the "Crystal" yet, what do they have to offer that would justify the higher price?
Drage? (I think you're familiar with the Crystal discs?

)