the two best fat burners on the market are hydroxycut and xenadrine.
i'm not a big fan of ripped fuel, but thats probably because i took the ephedra free ripped fuel, and as expected, it did nothing.
either xenadrine or hydroxycut, when used in combination with a clean diet and hard cardio will give you results. period. how good will the results be? its all up to you, and how hard you choose to diet / workout.
* people with heart conditions shouldnt take this stuff
* people who are hyper-sensitive to stimulates should lay off this stuff because they might have trouble sleeping