prim, I'm one of those types that always has about 5 or more polishes around. I'm also an old 'Vette lover, and way back when, Liquid Glass used to be known as one of the only types of polish to use on 'Vettes. So, I've had it since about 1990. I've used it off and on for all of my cars since then and would agree that it is really good on wheels for brake dust---I find it's the best to wash off brake dust on the coupe's wheels. And that doesn't mean it isn't good for bodywork also; it is good for that as well.
That said, it isn't the only polish/wax I use. I've found that generally, nothing lasts for 6 months. Unless the car sits in the garage, covered. Liquid Glass is very expensive at 16-19 per can. My usual choice is one of the store-bought Meguiar's waxes, cleaners wheel cleaners, etc. Gold Class Meguiar's wash and liquid wax from Target is usually a pretty good bargain (gallon of wash for 10, bottle of wax for 9.50) (I've even bought Meguiar's premium stuff by catalog which runs about the same as Liquid Glass in cost---a little better but not enuff to justify the cost) I'll also use Eagle One for wheels.
I'm not a Zaino user and can't comment on it; it's a little too exclusive for me and hard to get--kinda like trying to find Amsoil. People swear by it tho, even if it does seem like a lot of work and coats.
Hope this helps.
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