Ive tried Bodyoctane andstack and loved it but way too pricey. Ive tried various different caffeine free versions of some popular PWO's. What are some of the best one's I know 's a good option but no way am i paying $50 for 40 possibly only 20 servings if a single scoop doesnt suffice. Ill have to wait for it to be on sale for $40 or something to even try that one. So any other good options out there?