Thanks for your responses so far. It would appear from everyone's comments and djy's link that RGB is at least comparable to component video.
From all I've heard, component is so superior to S-video that I think investing in an S-Video "upgrader" is almost certainly worth the money.
Component to RGB "transcoding" sounds more problematical. I'll have to think about that a bit more.
I would appreciate hearing from anyone who has had the opportunity to personally compare RGB to either S-Video or component video. Thanks again! -Bruce