I'm currently finishing off my pre's a little at a time. I just put a little in with my water, but the main thing is water, bcaa's and creatine. Pre's are mostly just a waste of money, methinks, just like any drink with stims in it. It drives me crazy seeing someone spend $3 on a monster when a $.03 caffiene pill will do the exact same thing.
You want a rush? Train on EC stack. If your head doesn't explode from the blood pressure then you'll have a great energy rush. Plan for a nap when you crash.
Current PRs at 242- 495, 345, 585, 1425