First, do/take whatever works for you.
Second, I used to take NO-Xplode preWO. Decided against buying another jug because of the nebulous connection between NO products and the performance-related benefits they purport to provide. Essentially, some learned folks here in D&S expressed their opinions about NO supplements (that they're largely a scam), so I decided to look into the matter myself and decided that plunking down hard-earned dough on supplements like NO-Xplode isn't worth it... at least not for me.
Did I feel the effects of NO-Xplode when I did take it? Sure, I felt energized, but that was due to the caffeine, tyrosine, b-vits, etc. This can be replicated by ingesting caffeine preWO and maybe a b-complex tab or two.
Was I able to perform more work at the gym? Yes. Was it due to the placebo effect? Maybe. Are there ways to do this without using NO products? Absolutely. D&S is full of info pertaining to this.