I have a business trip coming up & I'm looking for the smallest mod with TC. The eleaf 40wTC is pretty small, the Clouper Mini looks to be about the same size but quality of Clouper in general seems to be poor from most reviews while eleaf generally overall are quality devices. So what else is out there? Something small, fits in a suit pocket, not too heavy & either swappable battery or decent life from the onboard battery.