I've just purchased 30 TDK-RW from CD-R Media.co.uk and my JVC DR-M1SLB Recorder is happily rejecting them, telling me to check the discs. Any advice or knowledge of a possible problem? This is the first compatibility issue I've experienced with the JVC. Also has anybody experienced problems with CD-R Media Returns policy or will everything be OK on that front? Thanks in advance - I've got a big project on and this could'nt have come at a worse time.