RGB is better than svhs, but a monstercable svhs easily wins over my cheap RGB cable, So if U can buy a goldplated RGB cable for the PS2 then U will get better quality than a goldplated s-vhs, but there is no one out.
The quality of cables is very important, every HIFI man knows that, and that is why Im going to by the monstercables optical cable for my PS2 when i can find it in this country.