Hey Domi, thank you for bringing this to the front :flower:
Judging by our members' posts, there are quite a lot of people buying HTL BD-R. In the US, HTL BD-R are by far the cheapest available. The situation is a bit different in other countries, where LTH can be among the cheapest.
Some of us will undoubtedly continue to use optical media as a second or third tier for archival storage. And we are most certainly anxious for any news on their longevity.
@tmc8080: I don't think that you're keeping up with BD-R prices. Currently you can get those long lasting Panasonic BD-R for $.07/GB, making the price per GB lower than HDD and an attractive option. Far lower than the $.33/GB cost of archival grade DVD-R. In fact you're getting 1TB of high quality BD-R for $70.00. Looks darn good to me. And the advantage of reduced shelf space required by BD-R vs DVD-R just sweetens the deal.