Taiyo Yuden DVD+R: http://www.supermediastore.com/taiyo-yuden-silver-thermal-8x-dvd-plus-r-media.html# Product Code: DVD02X0098 Manufacturer: Taiyo Yuden or Taiyo Yuden DVD-R: http://www.supermediastore.com/taiyo-yuden-4x-dvd-r-media-silver-matte-spindles.html Product Code: DVD01X0238 Manufacturer: Taiyo Yuden - Made In Japan Media ID: TYG01 Mfr part #: DVD-R47VAL600SK What is the difference on these? I read the glossary on DVD+-R. But on these, one is more expensive than the other and I can imagine that it is due to the 4x vs. 8x. My real big concern here is I want my back ups to be compatible with my Xbox, which is the 1st generation with the thompson drive. What do you all recommend? Thanx!