Yup. I have tried all kinds of nootropics, including pre-formulated ones like Alpha Brain, as well as created my own stacks. I did get decent effects from Alpha Brain, but I find nothing beats fine tuning a stack to match your own brain chemistry. They tend to work so much better for me than any mass produced off the shelf blend.
I would suggest start with a single nootropic, like a Noopept or oxiracetam, and once you get used to it, start adding other supplements. Take a look at www.bestnootropicsnow.com to figure out which ones would be good options depending on your goals (if, for example, your goal is to manage anxiety, you're better off using certain specific nootropics over others).