check out a sigelie 150w box... if you are wanting to do the cloud chasing, you are better off with a good regulated higher wattage box mod than a mech - much safer... vaping has evolved significantly beyond the mech... don't get me wrong, i have a couple mechs, though i rarely use any of them except my el cabron dual battery box, and i am not hating on mechs by any stretch - but my sig 150 will consistently out perform 'em with same builds - a regulated box mod not only gives you safety features (a HUGE plus if you are going to be cloud chasing, especially with lower ohm builds) it will deliver power to atty consistently, at the wattage you set, where a mech starts off fresh, hitting well, then dwindles...