(100%) The best signal is true RGB
(90%) then Component
(80%) then svideo
(50%) then composite (rca)
(I poped percents in there as opinion based upon the performances ive seen from each of them.)
Im sure there are a few others missing... but basically,
the difference between rca and svideo is huge.
You will lose a Lot of color and details if you use rca...
Svideo is much cleaner and detailed. Its very close to an arcade display. The later ATI cards have great svideo output, and output options. (i highly recomend them) Also, some tv's have poor svideo port quality. Try to look for higher priced brands rather than the cheapo or noname ones. (The panasonic 27" i got looks great. However, dosnt work with the actlabs tv gun):
Component video is only now starting to pop up in video cards.. however... I think the output is geared more from hdtv's rather than anything else. This may just be driver issues that havnt been perfected as well.
RGB is a pure signal that they pump into arcade or rgb monitors. The signal has not been compressed, so will be 100% accurate.
Composite (rca)

Svideo on same tv
