Since Ephedra and Clen are illegal, I would say that HGH/Cytomel stack is superior for fat burning. Cytomel alone is no good, for it burns everything, not jsut fat. The key is to find a supp or drug that stimulates beta-3 receptors in adipose cells. So far, HGH is the one. Octopamine may work, but it ahs a lot fo problems associated with it. Other research includes inhibition of the enzyme that starts fat storage and well as an oral that mimics HGH's fat loss capabilities.