Being so distraught by Ohm readers being so inaccurate I repurposed a Coil Master 521 Tab to use a DNA75C. I like the formfactor so thought it might ba a win for me. It still a single 18650 but added a YiHi style joystick, Varitube 510, and ATI 12mm button. Has the USB in the face so Escribe works and charging if needed. Feedback???