Sorry I’m so late to the party here, but what exactly are your goals?
Stimulant-Free Thermogenesis / Fat Burn / Lipolysis?
The Ephedra nowadays is mostly like a green tea, like others have said, alkaloid-free. The supplements that have it were really powered by PEA alkaloids (from acacia rigidula or senegalia berlandieri) alongside DMAA.
Genius Burn looks like a great formula. I like what those guys are doing, but they’re not cheap products!
PES Shift is a cool way to go caffeine-free, but not necessarily stim-free. A good coffee-topper if you drink coffee and want some ‘bonus’ stims and forskolin.