I bought a brand new LG BH16NS40 BD burner and decided to use these blanks. For burning I have Nero Burning Rom bought in 2014 and asked the burning speed to 4x (small is not, but according to blanks not a problem).
I wanted to perform a backup and etc.brennen photos, music, rolling FLME. At 15 blanks were 9 false fires. I'll never buy these parts again!