From the previously described Verbatim BD-R LTH Blu-ray (about 50 pieces) I had been no failures, the data (in my case, Full HD movies) have been written to the disc without error. The surface is to be described for this price also OK. I used previously and continue Verbatim DVD's of the same type (about 100 pieces) and was thus also well satisfied. I highly recommend Verbatim !!!