As Cressida said, you should have no problems with them unless the firmware support is poor. Here's a couple of my most recent HP CMC E01 burns, TDK branded CMC has been equal in quality to my HP brand CMC. I'm not that familiar with that particular drive, but you may want to look into another firmware version if the current one is giving you problems. Even with bad firmware support, the drive should at least recognize the discs, so maybe there is something wrong with the drive or a bad batch of media.
Burned at 8x on Benq 1640:
Burned at 8x on Liteon 160P6S: