Component video will provide the best picture quality, but because of the bandwidth involved in component video it's best to go directly from the source (DVD, HD decoder) to the display -- switching that won't cause any degradation is expensive. Also, you can't get an HD signal to the display without component video, so you'll definitely want to use that if you have an HD decoder. The 1050 has no on-screen display (the display on the unit handles everything), so you don't need to go through it except for convenience.

S-Video typically is a good bit better than composite. With some source material can look comparable to component, but with the right source material and equipment component will definitely win out.

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