any of those will work, if they are just scratches the easiest way would be the light weight body filler, then next the next option I would used fiberglass reinforced filler, then final option fiberglass patch.
98.5 Black SVT with 34k miles Build #5683 Born on 4\15\1998
WR Headers GMK CAI
Blaupunkt system fiberglass tweeter pods
L.E.D. tail lights in the works