I bought some of the Sonic 4x. Info on them were Longten-002-00. With the 50pack that I finished, 4 of them came scratched that wouldn't burn. Half of them burnt with errors using Nero, but it still played fine on my PC and LiteOn dvd player. Some had problems playing on my Pioneer dvd player though. You do get what you pay for. I think next time, I'll wait for some Verbatim to go on sale. With Verbatim, only 1 out of 300 didn't burn and they played on everything that I threw at it. Those are some good media!