Just about all manufacturers hype their products, citing best case life data. What you will experience in real life use will be different, probably substantially less.
If you are that concerned, obtain CD/DVD diagnostic software and a calibration/test-quality drive. Make two copies of every archive media (one is a back-up). Then every 6 months to a year test all your archive media for correctable read errors. When the number of errors starts to increase make a new archive copy (i.e., before the errors become uncorrectable). While not a 100& guarantee that you will not lose data 20 years from now, it is a significant step toward that goal.
I have no specific recommendations as to which software or drives to buy.
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