If you want to buy a prepared product, VPX Redline is great and wont give you a brutal crash later. If you want to make your own, a simple ECY stack would be good.
I am trying VPX redline now too and have to say it works well. but be careful dont take on and empty stomach or too soon after eating something unless u wanna barf your ass out
2 Thermorexin and a bottle of REDLINE before every workout and you'll be pumping through the roof. That is my pre-workout supps shedule and nothing I have ever used can compare to the energy I get from this.