Has anyone tried Thermicore by MetRx or any of the other time-release thermogenics? I really like Thermicore during the day, but after the 8 hours and it's gone from my system, I just crash. So I usually don't take it until after lunch, or I'm ready for bed by 5:00PM. I tried Hydroxycut a few years ago and really liked it, but it got so expensive. What is another thermogenic I could try that doesn't leave me dead-tired at the end of the day that's reasonably priced?