Matt, while I have never been to a Meg's clinic either I do, of course, expect it to be heavily geared toward their product line and almost a live infomercial. That doesn't bother me in the least because I know that no matter how good the product, if your technique stinks the results will not be optimum.
As for someone stating that there are better products than Zaino for a particular poster to use on his new BMW, that is one person's opinion. There are as many opinions as there are products out there. In my experience, Zaino lovers tend to be extremely zealous when touting that product, moreso than other folks do with other product lines. Some people see that as "buying into the Zaino hype", but to me, if someone loves a given product that much, so what. I may have other preferences, but that doesn't make either of us "wrong".