If you hate the idea of fine tunability, and refuse to believe anyone who says the bikes are too rich in some spots, then it is the box for you.
It(and some other boxes being marketed under various brands) only allow you to ADD fuel, there is no way to subtract fuel.
It has adjustments that mirror a carb. Which is fine if the idea of more than 3 points of adjustment causes your head to spin. Just realize that you are trading simplicity for adjustability. If you have a stumble at just one RPM and throttle position, this can't adjust JUST that one spot. It will adjust everything around that spot at the same time.
But before you buy ANY fuel module, ask yourself why you need it? Understand your exact reasons for getting one, and it will help you determine what is best for you.