I like samples not necessarily to see if the product works, but to make sure it won't break me out.
Purity Made Simple works really well for me. I have oily/combination skin, but it dries out with most other cleansers. Purity has a thick gel-like consistency and doesn't lather, but it still cleanses well.
I just started using the Microdelivery Peel. The exfoliator is very dense and scrubby, but not coarse. When you apply the gel, there's a warming sensation. So if you're skin is sensitive at all, you probably don't want to use this. The exfoliator is very dense and scrubby, but not coarse. When you apply the gel, there's a warming sensation.
I haven't tried the rest of the products in this set.