Im surprised this Mod isn't getting more love. I am guessing the G-class took over the SX Mini discussion. I had bought a G-Class, and wasn't as impressed as I thought I'd be. It was definitely on the large size, the joystick on mine fell off, and I was not liking where they placed the button.
I returned it, and purchased the Q Mini, and this is a night and day improvement to the experience I had with the G Class or any other Yihi mode I have had in the past. This mod is rock solid. My complaint with the single 18650 versions was always battery life, and paint finish. The original Q looked to be a little too large for what I was looking for. This Q Mini got everything right. The Bluetooth works as advertised, only thing is it doesn't appear to be able to upgrade the firmware, is this just me or anyone else? The device fires immediately, the powerful setting on my Nautilus X is excellent, and for the most part, I keep it on Novice for simple pick it up and just use it experience. Yihi really stepped up their game on this mod, such a rock solid device.