I have a 25 year history with ephedrine hcl and everything that came after it. Sulbutiamine, StimX, SlimXtreme, Adipokinetix (1R, 2S nor-ephedrine), OG Craze, EphedrA, Sida Cordifolia (now that was something!), Venom, 1,3 etc etc.. While I haven't tried DMHA yet, I'm looking forward to it.
DMAA...