BTW ... The Dial-A-Volt is a nifty batt. Works like The Twist, Spinner, etc., but V4L also makes an auto Dial-A-Volt. Performs as well as The Zeus but you can take it down a notch if your juice's "sweet spot" is less than 5 volts. And ... You Can Clearly Read The Numbers! But I digress ...
I haven't hit the "dozen refills" yet on the devices I'm using but as soon as performance drops appreciably I'll check out the posts here:
to see if cleaning extends Smileomizer longevity. $32.50/$39.95 seems a bit steep for a 5-pack of cartos. But if they clean up nicely I wouldn't have any problem recommending them. V4L's carto tanks don't work as well on The Zeus as a Smileomizer does. I have problems with carto tanks anyway. Too much fiddling. Every single bottom/top coil tank I've used lately is more fun than a carto tank. And way easier for a noob.
So if/when your friend makes a move ... The Zeus should do the trick. I painlessly/seamlessly quit smoking with an 808 automatic. A Zeus would have been more fun. But ... as we know ... once someone starts vaping ... eventually they want to try everything.
Hey ... V4L just sent me a picture of the new mouthpieces: