Few years ago I did a review about the Alclad paints, I did several tests ( and of course I have been used the paint from then on)
http://www.modelersite.com/Jun2002/English/Alclad2_Eng.htm
Aclad is not easy to use you will master your tecnique, however is the only decent way to try with paint.
To repair small scratches in chrome parts Gunze is offering a paint marker which result is amazing, no silver paint tru crhome, but just useful for small parts.
http://www.hlj.com/product/GNZGM100
Of course the metal foil is still the best choice, if you learn to use, the trick is to have the right brand and follow the instructions
Mario Covalski
Editor Modeler Site
http://www.modelersite.com/
Mario Covalski
Editor
http://www.modelersite.com