Over the last few months, I have been looking for that perfect box mod that really is high tech and works as advertised. I now own 13 box mods and finally found it with the YiHi SX Mini M Series TC. Sure it's one battery, sure it's (now) 75 watts, sure it's expensive.
But I haven't even looked at another mod since. I carry two of them, so battery is no issue for me. Yup, I plug them in every night, but that's no big deal to me.
It runs enough wattage in power mode to work with my Subtanks I take to work (won't drip at work). Thanks to the new firmware update just released, not only bumps it from 60 to 75 watts, it now supports titanium wire as well as nickel and of course, kanthal.