this is my first time taking anything within it, so i was expecting good things, and sweet mother of all that's holy was i impressed. I am on my 3rd day of taking 1 scoop / 1 scoop Maximizev2 about 30 min preworkout, and BAM! the pumps are incredible. the energy is great, not too much, but plenty to keep me pushing the entire workout. I must say, this is the best preworkout combo i have ever taken, and it started working on day 1! for all those on the fence about these 2 products, JUMP ON OVER! nutraplanet has a good combo deal for the 2, and if you only take it on lifting days and 1 scoop each then they will last a while!