I am using Gaspari's SuperPump now along with his SizeOn Creatine and man....I am so hard, it's crazy...I am having some good workouts and I am hard as a rock afterwards....my strength is increasing tremendously, and when people touch my arm, they go "WOW" and can tell I have been working out...The SuperPump is great and it makes me feel good...almost high....but it doesn;'t mix well and it tastes really, really strong like you are drinking pure splenda...but honestly, the goddamn thing works..I am even harder in the pants since using it...along with the SizeOn, this has been awesome for me...I walk around all day feeling pumped up and full....very good and good for my confidence in the gym and in general....I urge everyone to try these two products together...I am not a shill...trust me