the key of success:
-- buy 16X DVD-R, not 8X
-- burn the dvd-r at 2X, or the most possible speed of ur dvd-writer
-- try serveral brands, select the one "that fits ur wii beautifully" and keep buying it.
one brand may hv a few model or series. they perform "differently"
my comment -- different DVD-R supports differnt Wii supports different countries
