The PDF is confusing:
"MAIN FEATURES OF THE PIONEER DVR-K16
â€¢ 8X8 Writing Speed on DVDÂ±R/RW, 24X on CD-R/RW and now 5X on DVD-RAM
â€¢ Supports DVD-R (Ver 2.0, General), 4X DVD-R, 8X DVD-R, DVD-RW (Ver 1.0, Ver 1.1, & Ver 1.2), 2X DVD-RW, 4X DVD-RW, 6X DVD-RW, DVD+R, 4X DVD+R, 8X DVD+R, DVD+RW, 4X DVD+RW, 8X DVD+RW, DVD-R (DL), DVD+R (DL), CD-R, Ultra-Speed CD-RW, Ultra-Speed + CD-RW, Multi-Speed CD-RW, High-Speed CR-RW"
At the first bullet it says "8X8 Writing Speed on DVDÂ±R/RW".
The second bullet says "Supports ... 2X DVD-RW, 4X DVD-RW, 6X DVD-RW".
Since these will be written multiple times as rotating backups with Norton Ghost 2003, it might be best to not push the speed and just go with the Verbatim DVD-RW 4x from Rima.
Any thoughts are very welcome.