Some of my favorites are the Duragloss team (105, 111, 601, etc)
Menzerna PowerLock - Really, really easy to use. Extremely slick to the touch and very easy to remove. I use it on plastic, all surfaces, glass, etc.
Ultima Paint Guard Plus - Looks great and fairly easy to use. Used on all surfaces.
OptiSeal - Looks good and easy to use.
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