I have only tried 2 brands of MMU so far. I tried Arbonne (a Mary Kay type company) and then Everyday Minerals.
I found EM a much better price. The sample sizes look small, but tend to last quite a while. I would think a company that offers samples might be a good choice. That way you can see how they do on your skin (mine's acne prone) and you don't have to pay full price for a large jar/packet of something you might not be able to use. Just my thoughts.