One mistake I see people make is assuming that a dual-mesh device will automatically give them a better experience. That's only true if you're willing to learn its quirks. If you buy a powerful device but never adjust the airflow, you're just carrying around extra weight.

Another wrong turn is buying a pod system that isn't compatible with the cartridges you already use. Some pod systems are proprietary, so you're locked into that brand's pods. Check compatibility before you buy, and read reviews from real users.

Finally, don't ignore build quality. A cheap dual-mesh device might leak or break within a month. A decent pod system might cost a bit more but will last. Look for reputable brands and check for warranty information.