I preferred Piracetam to Aniracetam, myself... but of course everyone is different. Aniracetam takes longer to really work- I hear. I was very volatile when I first started taking it... kind of blowing up at people at work/the manager of the place I worked at. Shorter temper, Etc. Piracetam didn't do this.
I did take Oxiracetam for about a month.. but didn't really notice much cognitive improvement, but it was interesting. I honestly almost forgot I took that.
Piracetam is probably the most cost efficient of the Racetams, and has a longer history of use, and a lot more info on it.
Noopept sounds interesting, definitely. I like the sound of it because people say they don't need choline for it? Can you confirm this, cryptix420? I only read a little bit, and am curious.
That's one reason I stopped with the Racetams... I couldn't get the choline dosages right. And there was so much conflicting information online about it, about how you need to take this much, this much... that's too much, that's too little, this gives you a headache- that doesn't. Upregulation... Brain fog- this and that- I just didn't like taking a chance with my day like that.
Does piracetam "work"? That depends... on you, and what you want to use it for. I found it increased memory in ways, but make me forgetful in others... but it made me feel good, and alive... and music sounded really good. And for a time, I think it might have even made weed better. At least for a time.
Ah-- Piracetam helped my verbal-ability. I remember that.
I have a suggestion for a true cognitive enhancer- that I found actually worked. It just wasn't with interesting extras like piracetam...
Phosphatidylserine. I was on point with that. Everything became easy for me to do, and my mood was stabilized. It was combined in the formula I got, with GlyceroPhosphoCholine or "GPC"/"Alpha-GPC". Both are proven to be beneficial to the nervous system, and rest of body, in many ways. I took it for a good time, and feel it really benefited me. I began exercising. It gave me energy. I was positive. I joined a gym, and started exercising. Eh- then I got a staph infection on my legs and ass from the sauna there, and took antibiotics without properly replenishing my gut-flora, and then I couldn't eat hardly anything, and still can't. I'm afraid of supplements. But I eat enough hemp seeds to have plenty of stuff to make cholesterol from, and hence enough GPC and Phosphatidylserine endogenously

Hopefully.
But the phosphatidylserine/GPC supplement that I took... I clearly found that I functioned a ton better when I just took that supplement, and no Piracetam/Racetams. But... those are interesting nonetheless, to me.
As for beta glucans... do you like Oats?