If your looking for the strength end of it, I'd go the NOS Ether route. For a pre-workout supp that keeps you focused, motivated, and increases stamina, JP8 is the one. If you can, they make a sick stack together. I wound up giving away my brand new tub of NOS Ether to a bud, but he let me take a scoop before a workout, after I had taken almost a scoop of JP8. The pumps were so intense that I actually had to up my cardio time between sets to give my arms a chance to mellow out, they felt like they were gonna burst. Both are good and do what they say.