I got my girlfriend two evods, so she doesn't use my carto tanks. I don't know if I've just used cartomizers long enough, but the head being able to wobble every so slightly is irritating as hell. I really don't see why it's recommended so highly. She's still stealing my tanks and barely using hers.. At least I reconfirmed I personally hate clearomizers, bottom coils especially. I'm interested in the iclear 30s..