How compatible is the Amiga RGB signal to the Component inputs on TV's these days?
It isn't. Component TVs use Y, Pr, Pb instead of R, G, B. There are converters (transcoders) but decent ones cost big $$ and would probably degrade the signal somewhat.
Some pricy plasma displays still have RGB support - such as the ViewSonic VPW450HD. I am not aware of any tube sets with RGB support. It's either YPrPb or the up-and-coming DVI-HDTV standard (fully digital).
