And others, such as BobbyG has reviewed, and found very favorable results, and longevity with CQuartz DLX.
These positive reviews were what influenced myself to try the product, and I too was very impressed with what it does, and how it is holding up.
I in fact just ordered another bottle from Autopia, and as well a 4oz bottle of Detailer's Paint Coating, and a bottle of Duragloss Aquawax. They currently have a sale on all products, with 15% off, free shipping over $75, and in fact extended the sale as I seen this morning in my email. AG I believe will also honor this sale, being that they are the sister business.
CQuartz DLX might seem expensive, but a little goes a long way, and it appears it lasts a long time, so that in itself makes the product actually economical in a sense.
Products that need constant re-application IMO are not money savers.
Another upside of CQuartz DLX, is it is clear, meaning this product will work on any color trim, not just black.
One bottle should be more than enough for any average car's exterior trim, unless you perhaps have one of those Avalanches, or Honda SUV's, that are 1/2 cladded in Vinyl Trim, then one might need an additional bottle to complete.
Once you start using it, you'll want to apply it on so many things.
While I haven't tried it, DLX would probably also last longer than other lesser products for protecting headlight, and tail light housings. Either those that are new, or those that have been restored, and brought back from the dead. Mark