I am not claiming that they are garbage. I used T-911 and I think I got results from it. That's why I will call them inconsistent at best. You will also see a lot of people that are a lot more educated and informed than I am who will explain why they are completely bunk. Bottom line is that if they work for you, then hell yes use them. Even the so called-placebo effect can give you a bit more boost, or maybe you respond well to them.
For me as far as the ECA stack goes, I buy my Primatene from wally world for about 9-10 bucks. Each tablet has 12.5 mg of Ephedrine. I also get my caffeine from WM as "Jet-Alert" for about 3 bucks. 200mg per tablet. As far as Aspirin, the jury is really still out on whether or not it helps at all, or how much to take.
2xPrimatene
1xCaffeine
1xAspirin
3 times per day. Although the first couple days you may want to stick with 1 Primatene tablet per dose as you can get pretty jittery on it if you don't tolerate stims well.
Personally I only use this stack for about 2 weeks at a time because you acclimate to it pretty quickly. But the results are not inconsequential. If your diet/training is on point, you WILL see faster fat loss using this stack.