Hi! I'm a newbie so I have a stupid question! I'm running low on dvd's and so is my gf. The problem is her burner is 4x and mine is 8x. Do I have to buy both kinds of dvd's or can she use the 8x kind? The reason I ask is because everybody on the other board says to burn stuff at 1x or 2x speed and I have. I've burned at 1x, 2x, 4x, and 8x on my 8x dvd+R's. So can she use 8x dvd+r's in her burner? That way I can buy a 100 pack and split it between us. I plan to buy Taiyo Yuden, if that matters.