Does anyone know exactly which brand of DVD-RW will work with an iMac superdrive? I wish to burn some Quicktime footage as well as some slideshows then play the disk on my Arcam player. Unfortunately the iMac keeps rejecting my brand new TDK DVD-RWs. It must be the brand because the iMac superdrive is definitely built to be compatible with DVD-RWs. Thanks in advance.