So im a fan of the dmaa and caffiene combo. Ive tried several products over time and i always return back to jack3d. They all work and give me a good boost i enjoy for my lifts. However, some of these products keep me up way to long. Meso andwere the two i cant take unless its about 8-9 in the morning and i hope to sleep about 12-1 at night. Pre-surge unleashed sometimes keeps me up, sometimes not. Jack3d never has affected my sleep and thats why i return to it. But ive always been curious of , i was looking for feedback on how it compares in the kick department and how long the effects last.