The old Jac3d had 1,3 dimethyl in it which is sort of banned and sort of not, either way, its not good for you if you're trying to put size on because it is also something used in a lot of fat burners, that's why people like oxyelite pro so much because they're walking around all day on small doses of amphetamines. New jac3d formula sucks, it's not worth it. Pump HD doesn't really boast a stim aspect to it, it's supposed to be for a pump, (hence the brotastic name) I used to sell Pump HD along with another stim in order to get a better pump and energy
. It wasn't necessary but it is fun to take both. Take the N.O. explode and please throw it in the garbage where it belongs because it's all stim and doesn't offer any performence benefits, (unless you consider taking the loudest dump of your life a benefit) I can't speak for monster pump bc i've never had it but i hate cytosport and their products are terrible with the exception of monster amino. The two best Pre workouts are: Assault, by musclepharm, and 1mr by BPI. After taking virtually every preworkout out there these are the only two that I will ever take.
Also please allow me to be a mom for a second and say that you don't need preworkouts. The only reason I ever took them is because I got them for free when I worked at GNC. I used to have young guys in their early twenties come in all the time asking for sexual health products because they had a hard time having a hard time. The reason for this is because you can over tax your CNS by taking so many stimulants without taking a break, or taking a preworkout too often and they get blood flow problems.
I only take preworkouts when i need them, or as a treat to myself. They will not affect your training progress, they just give you energy. Also if you're doing smolov, do you really want a preworkout? I never take preworkouts on days i either squat or deadlift because i will past out from all the blood rushing to my head. And leg pumps kind of suck.....something to consider