Favorite Naturium Products?

Last month, I bought my first Naturium product, the 10% Azaelic Acid, and oh my! It's been a unicorn tears product for me, so I'm wondering, what are some of your favorite products from them? They are so affordable, and I would love to add some more of their products. How is their Niacinamine serum? I bought The Ordinary's, and I hate it. I think it's making my skin worse, so I just abandoned it.