Memorex 4x Blu-ray blanks

[jgwatt]

Hi all,
I wonder if anybody has had any experiances with the Memorex 25GB BR-R 4x blu ray discs using the LG GGW H20 burner.
I have just had an interesting problem using the LG GGW H20 with TDK 25GB BD-R 4x & the TDK BD-RE 2x working great yet the TDK 25GB BD-R 2x failing every time.
I contacted LG and all they could suggest is that I try a disc first, which could get very expensive. You would hope or expect that they could have provided a list of disc brand suitability to there burner.

Thanks all
john