I've been wondering about that too... I've tried Hydroxycut, Xenedrine, and a couple others. The Hydroxycut worked but I hated taking 4 caps 3 times a day. Xenedrine works just as good and you only take 2 caps twice a day.
I've been thinking about getting the Phenyltrophic PPA, but was curious as to how good it works. Not to discredit George Spellwin, but you never know if those testimonials have been doctored.
If anyone has used Phenyl PPA, please IM me and let me know what kind of results you received. Thanks!