I Usually use DVD's for games that are Japanese or ENG patch Versions to leave room for English games. Sony DVD-r are the best dang DVD there is. XBox360, Xbox, Wii and PS2 all read them. If you're looking for Dual Layer I know Sony Makes them too.
Just FYI. The disks used to be white, now they're black. U can get a 50pack for 30dollars at Wal Mart, etc. 30$ might be a lot to you, but when you don't have "coasters" piling up on your coffee table, you'll be happy.
-Wynd