So, what actually matters? Let's rank it.

1. Battery life – This is the biggest factor. If the battery dies too fast, nothing else matters. Aim for at least 400 mAh, or get a model with fast charging.
2. Ease of use – The recipient shouldn't need a manual. A simple one-button operation or auto-draw is best. If there are temperature settings, make sure they're intuitive.
3. Durability – It's a gift, so it should last. Check the build quality—metal is better than plastic, but both can work. Avoid anything that feels flimsy.
4. Airflow – As mentioned, adjustable airflow is a plus. If it's fixed, make sure it matches the recipient's preference.
5. Size – Yes, size matters for portability, but not at the expense of the above. A slightly bigger vape that works well beats a tiny one that's frustrating.