Modafinil

Looks like a lot of these get shipped from India. I've heard concerns about the quality of drugs shipped over the internet specifically originating from there. Should I be worried?

seconded for Airsealed. I ordered from them a year ago and the service was great and I could not detect any difference between their generic (Modalert) and Provigil.

As others have mentioned your mileage may vary. I used it for about 6 months during crunch development periods or when I felt I needed a bit more focus and it definitely helped me get through those times. I stopped using it because I felt out of touch with my team members when I was on it and I had started to experience a deeply unpleasant metallic taste in my mouth just after taking it.

Adderall is mix of a couple amphetamines with slightly different half-lifes (so the come-up\crash is smoother). Amphetamine is basically the classic stimulant to which all others are compared. It is extremely common in competitive universities in the U.S. where many students use it to cram\finish papers. If you take it everyday, you will be very motivated and feel great for ~1 month, after which you are back to baseline concentration levels when on it until you take a break for a week. Amphetamine depletes magnesium and increases muscle tension. I personally find it only increases my efficiency on very repetitive tasks such as cleaning or doing laundry and hinders creative work by causing too much hyperfocus. I would not recommend it and think there are much better alternatives but your mileage may vary.

Somehow the thought of close air support pilots on 2C-I does not fill me with confidence.

What dosages are you talking about? 2-5mg? 10-25mg?

Am I tripping balls or did you just suggest a 2C compound for improving cognition?