I was skeptical and couldn't decide between t-rex and lipoflame. Well, I have no idea about t-rex and couldn't care less after three days of lipoflame. This is the first product I have really liked since the good ol days of the original Xenadrine. The only problem was I started Monday with 3 pills in theam, 3 at lunch and 6 amplify at 4:30 before my workout. First problem my training partner was pissed b/c he didn't take any and was telling me to calm my little crackheaded ass down b/c he said I had gone psycho. He really got pissed after we finished 45 minutes of supersets for chest and back and did sprints for 20 minutes. The other problem was I couldn't sleep for shit, so I take them all in the morning and that helped. The good problem was brownie points with the wife b/c I still had to do something after working out, so I cut the grass, washed dishes, cooked and vacuumed. Also understand I have a 3 year old boy who is a ball of energy and I wore his little ass out with a little sword fighting and wrestling. Very good work guys, I have no problem if it's not the cheapest thing or there are no discounts b/c you get what you pay for.