Some things should make you pause before buying. A device that's advertised as "cloud-chasing" is probably not going to give you a tight draw—that's a mismatch. Also, if the airflow is fixed and you can't adjust it, you're stuck with whatever draw the manufacturer chose. That's risky for a tight-draw lover.

Another red flag is poor build quality. If the mouthpiece feels flimsy or the battery rattles, walk away. These devices get tossed around in bags, so they need to survive a few drops. Look for metal or reinforced plastic, not something that feels like it'll crack.

Be wary of extremely cheap devices. They might save you money upfront, but they often have weak batteries, unreliable coils, and shoddy seals. You'll end up replacing them sooner, which costs more in the long run.

Also, watch out for devices that aren't compatible with standard 510 cartridges or common pod types. Proprietary pods can be hard to find while traveling, and you don't want to be stuck without a refill. Stick with widely available options.

Finally, ignore marketing hype about "medical-grade" or "therapeutic" claims. CBD hardware is just hardware—it heats a cartridge or pod. No device is going to change the effects of your chosen e-liquid. Focus on the mechanics, not the buzzwords.