Menzerna polishes DO NOT contain ANY fillers! These are OEM polishes for use by 'Benz and others in Germany. Their product quality control is the finest in the industry! They are ISO and TUV certified.
Problem most people have is the use of them. Since they are used in the OEM market and not for the detailer, problems come from improper use. On the production line in an OEM factory, Menzerna is used for spot repairs. They have a set standard/ISO system for it's use. In other words, x=milligrams, y=pad z=speed use for rotary polishing on the line.
Not to say it can't be used for detailing, just understood how it works and how to work with it.
Once you learn it, you'll find it's one of the best polishes out! They have a line that also covers the new Ceramiclear type finishes and use a more expensive abrasive and lots of it for it!
They DO have a glaze in the lineup, but that's used outside OEM.
The FMJ, although having the Menzerna name is NOT made by Menzerna, but licensed to be sold in a "kit". It's made by one company that proved to Menzerna their quality control and product line that was then approved for licensing. Nothing wrong at all with FMJ, in fact, most people really like it! Works very well and does what it says it will.
3M is the largest marketed polishes in the USA and in some countries as well. They have a tight reign on distributors, so polishes that are essentally better such as Menzerna are having a hard time finding distributors. 3M has very good marketing and a good line of products. Used correctly 3M polishes are very good at what they do, such as PIII-MG and others. Just remember that their use is for mostly bodyshop repairs.
For the detailer, most stay or use Meguiars and some other polishes as well such as Poorboys (which work VERY well) and others that are geared more to detailing and use by PC.
I hope this answers some questions on Menzerna.
I carry the entire line for work on some high-end finishes. Comes in quarts and gallons.
Regards,
Deanski