Are you sure that the 'chrome' isn't actually anodized aluminum? Check the thread nearby for a discussion of re-finishing ('polishing dull aluminum trim'). If it is indeed chrome, any of the products you mention should work. If aluminum, join the club of those who are looking for a 'quick fix', in search of the elusive 'green stuff' or whatever.. My searches on the web have so far convinced me that scratches in anodized aluminum cannot be removed without complete refinishing of the metal substrate and re-applying a protective coating, be it anodizing, laquer, wax, or whatever. Turns out to be a rather involved subject.
