I just ordered a bunch of foundation samples from MAD (tonight). They have wicked fast shipping so I think I will be able to tell you soon. One thing I find with mineral samples is that I usually need to try it a few times before I can be sure whether it will look good in various lighting. I decided to pick up some refill bags (instead of the quarter teaspoon) for 5 gram jars in the foundation colours I want to try since that will give me more opportunities to experiment.
I think the ingredients in MAD foundation sound just right, and I find that sometimes a medium coverage foundation with on the spot concealing looks better on me than one that is too heavy.
I will let you know...by the way, Barbi is super nice!