I bought these a few years ago, so I dont think you can even buy them anymore.
But, they are HP DVD+R's 8x. The dvd's are yellow.
I've burned 10 games now on them with imgburn on 4x, and all 10 work perfectly. Now keep in mind i have the D2Pro9 v3 modchip with the latest firmware and a D2B board Wii.