Poor quality. Scratching immediately !!!

I do not have much experience with rewritable DVD's. My first spindle were 10 DVD-RW's BenQ. Since I already wondered how many times I could rewrite. The no longer existed then and I bought then a spindle of blanks (Verbatim DVD + RW). What a difference. While I have two of 10 BenQ still in operation and can describe again and again, yet have ALL !!!! Verbatimrohlinge within three times to describe the spirit abandoned. I must say that I still had no failure when Erstbeschreiben. But I use the blanks on the road and even though I very carefully so Bypass and aufbewahre in an envelope, likely to lead the inevitable slight scratches in and out of the company from the case is that after write no later than three times is the end and I take a new blank must. Recessions, after which up to 150 times can be rewritten are absolutely incomprehensible to me. I can only say that the opposite and will Verbatim buy ever again.