What would be better for putting a 720p movie back-up on. these phillips: http://www.meritline.com/philips-8x-dl-dvd-plus-r-branded.html or these memorex: http://www.meritline.com/memorex-2x-8x-dl-dvd-plus-r-silver-branded.html
In that case, try Ritek 2.4x +R DL's. JoeRyan said they were ok and you can purchase them at either meritline.com or supermediastore.com Good luck Jo