The black one at least is the least 'clown looking', changeable single battery mod I found.
Suited more for mtl really but can produce a bit of cloud now and then if you wanted to, when noone's looking - just carry a spare battery around if using it on higher wattage. I've been using it with Ares2 mtl rta and the Hellvape destiny dl rta, interchangeably. Very happy with it. As others have said, power button is a bit spongey but thats my only niggle. if you use it with efest batteries, tale the security sticker off the side of the battery before putting it in as its enough to make it a very tight fit and a ball ache to get out again.