Pre-workouts whatever brand they maybe are mostly loaded with stimulants which are addictive and do more harm than good, muscle tech no exception to this.
Stimulants are harsh to the CNS, they will burnt out ur adrenal cortex and spike ur cortisol - not to mention the sudden crash u would feel post there use.
A good carb and protein meal an hour before workout and a cup of coffee will give you much better energy and pumps in the gym for sure.