TDK ZCD-R80PTWNW, any good?

Im thinking about getting me some of theese, anyone tried them and know if theyre any good? They are sold for industrial use and they claim to be very resistant and stores your data safely for 100 years (dunno if thats a promise or just pr trick).

Anyone know what manufacturer makes theese?

Heres a link if you wanna see what they look like.
http://www.tdk-europe.com/products/uk/industrial_products/01/ZCD-R80PTWNW

//DiGGe