for performance and pumps you need a citrulline/creatine based produc t or any combination of several other ingredients, like cordyceps, cnidium, icariin, ala etc. nos ether level 1 gives wicked pumps, with its combination of citrulline, creatine, cnidium. cre02 gives awesome pumps with cordyceps, creatine, ala, etc. both give awesome strength and endurence in the gym, along with good asthetic pumps. cre02 is as good as it gets for pure ragged edge performance gains. neither has stims.
ragnarok is a good solid all in one if you are on a budget, it comes in a stim free version, tastes dreamy, and has lots of creatine and beta alanine.