Sure you can go with a proven formula, why not, as long as you're satified with the results you're getting. Having someone tell you, "hey, use this formula, it's the best one" is fine, and you're results will more than likely be better than if you had experimented around "looking" for the right combination that suites YOUR tastes and needs.
But let's not forget the positive aspects of "experimenting", namly learning by trial and error. And through such experimentation, you learn the properties of the individual copmponents found in your formulas. Gee, that doesn't necessarily sound like a bad thing to me.
"Give a man a fish and feed him for a day. Teach a man to fish and feed him for a lifetime..."