Yeah, svideo+dscaler can be mighty impressive as well. When I ran Sonic CD (Sonic Gems Collection, PS2) in DScaler it looked about the same as it did in Kega with DDraw acceleration. I guess that's pretty good
I don't think SCART is just the RCA leads combined... I do know they're ugly big cables that have the tendency to wear out pretty quickly if you aren't really gentle with them, but they give the best analog signal I know....