In the past I took The Razors Edge by Blackstone Labs and I loved it. I have tried all racetams, and adrafinil, noopept and have loved all of them. I have never found a better stack then The Razors Edge. It contained phenylpiracetam, adrafinil, and cdp choline. Haven't tried lions mane or Bacopa. Maybe I should. I need intense focus for school workload. Also have tried huperzine a and have enjoyed it. Inputs would be great. Something with good ingredients and good synergy as well. Preferably low stimulants. Thank you