Product recommendations for thick, coarse, 2b/3c hair

I'm getting ready to make a purchase from CurlMart to try some different things because none of my surrent products are CG or working for me. As I am reading the reviews, I have noticed that alot of the products on there appear to be geared toward people with finer hair. I don't want to buy a $20 leave in that's not going to work for me. So, any suggestions?