I have used about 40 of this pack with my HP Pavilion dv6 laptop and they all worked perfectly. Takes about 15 mintues to burn a full disc label (picture and text) using the software that came with the laptop.
They all came out nice and clear, however what i would say is that a black image doesnt come out that dark, but you can burn twice and that works but just takes a bit of time!
Its a good price for 50 DVD's and they arrived quickly. Would definately buy again.