Official Nintendo Wii D-Terminal AV Cable

should work, and the quality difference would be negligible. That lead is used really to hook up a moniter to the Wii, as such Component should work just as well, they will both output in 480p. The only big difference you will see is going from composite to component, thereafter better compeonent or VGA/DVI leads won't provide as big a jump in terms of quality.
 
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