Yes thats true There are few other options such as V2 series 7, VUE, Smiss Auro Hyrid, Boundless CF, HAZE few others However, none of them offers
--VW, TC Ni200, TC Ti; 0.1Ω-3Ω & Temperature Control & Variable Wattage - 50W -
again I would NOT buy Duo IF MY MAIN CONCERN GETTING A more powerful...