If your diet and workout plan is correct and good, then which ever thermo your choose really isn't all that important. Most of the popular ones all have the same basic ingredients Ephedrine and Caffeine. You're diet is the most important thing that is going to help you shed the fat (cardio to), you shoulnd't rely on a thermogenic as the backbone of your dieting phase.
Having said that, I heard that clenbutrix is pretty good, I'm gonna start trying NYC for the 1st time in about a month.