I bought this HP blanks because I have problems with Verbatim LightScribe blanks for my burner Philips SPD6003BD / 00 repeatedly. Often nothing is visible from the font and I have to resort to scouring and try again. These HP-blanks I had no problems so far: 13 described blanks all have 13 work right away. Of the 50 purchased I still have 16 übrig- where are the other 21? Wegeworfen due to various errors: A time not recognized discontinuation due to typographical errors, DVD, many mistakes that my DVD player skips or failures PIE on 280th With the burner Plextor PX-891SA and software PlexUtilities V.1.3.1 I have the following values for PIE receive (maximum / average value): 380/179, 370/85, 424/170, 1184/160, 1232/222, 473 / 216, 720/101, 320/108, 648/183, 421/130, 736/93. Then I stopped to write down the values. With the recent Plextor burner I can burn a single usable blank. However, this burner works with DVD + R blanks Verbatim better than the Philips. Now I'm looking on to blanks where I have no problems with both data as well as Lightscribe.