Good thought, Patrick. I think there wasn't any, but that is just my impression.
In that case, S100 probably wouldn't be a great thing to use...it has no cleaners. A cleaner wax like Meguiars cleaner wax might be just the ticket for you.
I think the Prestone is a cleaner wax, but I guess it isn't just what BlueShark needed. I enjoy S100 on reasonably clean paint because it goes on and off really easy, and doesn't stain trim. Some people have had it last up to 3 months, so it seems reasonably durable for a carnauba. A good cleaner wax would probably last just as long in the same conditions, though.
Another option is the Klasse route, which is more expensive. Klasse All In One is a cleaner/wax which is a good base for their pure sealant, Sealant Glaze. In one super comparo of waxes, Klasse reportedly produces more gloss and improved the look better than all the rest of the waxes, but they say they'd still use a regular wax...superior results? why not use it? anyway...
"When CR ran Klasse All-in-one and Zymol through tests, both were impressive overall. Both gave car finishes a superior gloss. Both improved the look of weathered panels more than any tested wax, except the top-rated Meguiar's Cleaner Wax Liquid A-1216s and the discontinued and slightly abrasive liquid Blue Coral Blue Poly Sealant BP25. Both Klasse and Zymol were very expensive. We paid $23 for 17 ounces of Klasse and $40 for 8 ounces of Zymol (plus $8 for a Zymol "pre-cleaner"). We'd suggest using a good regular wax instead."
http://list.miata.net/miata/1995-03/89.html
Nu Finish Soft Paste is the only wax that they tested in depth that had a "5" for durability. Too bad they didn't include Klasse and Zymol on the list...maybe they were afraid that those products would blow away the others, and they would loose their sponsorships.
Give the link a look, keep in mind that it is not an end-all study, but it is made for a consumer like you.
Kev.