My office has asked me to research dvd recordable media for archiving data. They are looking to archive data on a dvd recordable computer drive that needs to be stable for approximately 10 years. The discs will not be written to again once finalized. Which is best? DVD-R, or DVD+R, or DVD-RW, or DVD+RW? What about compatibility issues with other dvd drives? Also what about durability? Cost? A search on the topic produced no information newer than 1 1/2 years old, that's an eternity in computer years. Thanks for the help.