Would I notice a difference between S video and component video within a home theater projector?

In descending order of quality:

1. HDMI
2. Component
3. S-video
4. Composite

The differences are pretty easy to notice.

Would I notice a difference between S picture and component video in a home theater projector?

Video wire starts at the composite, S-Video, Component and HDMI. S-Video can lonesome handle around 280 resolution while component can bar up to the 720P. Always exhaust the higher cable once ever possible for advanced picture. Hope this will help you out.

Would I notice a difference between S video and component video in a home theater projector?

You should notice a difference in component picture over S-video.

At 50 inches, component video is said to be 25% better quality than composite video, and S-video 20% better quality than composite video, for 480i sources.

Your projector is 854x480p, enhanced-definition progressive scan. Use component cables, you should be competent to notice a difference in color fidelity, resolution, and smoothness of carving. Switch on the progressive scan next to your DVD player when you've blocked in the component cables.

Would I notice a difference between S video and component picture in a home theater projector?

Component even allows you watch within 480p (assuming your projector supports it) which should definitely be finer than s-video.