Obviously I am biased, but T-Bol has been the best test booster I've used thus far. It has a very similar test boosting effect compared to Fadogia as far as testicular swelling, increased mood, increased libido, load volume, exc., as well as an ergogenic effect which is very similar to Mass Fx and can be distinctly felt in the gym.
I'm currently running 6 caps/day, which is the recommended amount, with great success in terms of the attributes listed above, although some people go as far as 9 caps/day which amplifies the effects, but increases the cost.