Unlike [buck] I have a lot of reservations about the TDK BD-RDL media. I've heard nothing but bad things about TDK BD-Rs within the industry, especially regarding their Inkjet Printable BD-Rs, and their regular BD-RDL media. Apparently their BD-Rs were so barely within spec that when they added the inkjet printable layer it threw things off. The BD-RDL's are also nothing but trouble from what I've been told.
I have no personal experience with them yet though... but one thing we've learned from CDR and DVDR media is that a disc does not need to be 'within spec' to burn successfully. But we've also learned that a disc does not need to fail to burn, to be a bad disc.
On a side note, Verbatim's BD-RDL are not available yet... maybe in Japan, but not in North America.
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media