Now, tally up the signals from all three experiments. If they aced the glove test, had steady battery, and preferred the thick draw on the adjustable device, go with adjustable airflow. If they struggled with gloves, didn't notice battery drain, and seemed indifferent to draw tightness, a pod-style device will make them happier.

Remember: this isn't about which device is objectively better. It's about matching the tool to the human. A person who vapes mostly indoors might not care about cold battery performance at all. Someone who walks the dog twice a day in January will live or die by these details.