Depends on what you want the supp to do:
PowerFULL: pumps, increased recovery, lactic acid buffering, increased muscle mass, libido enhancement, anticatabolic, improved sleep, strength increases
Cialabol: nutrient partitioning, glucose management, anti-estrogen, pumps, increased endurance, increased strength
Ci: not sure what this is???
I personally like them all and think that if you have not tried any of them then your "first mind is great that way you will have a great mix