Online, you tend to find strong opinions in both directions, and FitSpresso is no exception. My approach is to weigh different perspectives rather than trust the loudest voice. I read positive accounts and skeptical ones, then try to find the reasonable middle. That balance keeps me from getting carried away or being unfairly dismissive. It also makes me more comfortable with whatever I eventually decide. I think this habit applies to most wellness topics, not just one.
If you value that kind of balance too, here is a measured overview: http://www.annunciogratis.net/author/isabellacal