i have quite a few systems that would benefit in picture quality if i went from composite to svideo.i know the picture quality increases to an extent but not as good as RGB.i also know that these mods usually requier some circuitry
to be soldered in and sounds like quite a bit of work.

is it worth the work if composite gives a pretty good signal already?

my systems include
mod chipped PS2 currently svideo
Gamecube currently composite
Dreamcast currently composite
Nintendo64 currently composite
mod chipped Saturn currently composite
panasonic 3DO currently svideo
Super nes currently composite

Sega CD with 32X
and master system
converter currently composite

Genesis with MGH
floppy rom loader currently composite

Turbo grafx CD currently composite
Nes currently composite

im sure i can get svideo cables for some of the higher end stuff but i will have to look into it first.