Now compare your keepers to your use cases. Let's say you identified two daily situations: commuting and evening at home. You already have a compact pod for commuting and a box mod for home. That means you're covered. If you also want something for travel that won't leak in your bag, that's a gap.

Only list gaps that show up more than once a week. Occasional wants (like a showpiece mod) are fine, but they shouldn't drive your buying decision.

For each gap, write what features would solve it. For travel, that might be: small, leak-resistant, internal battery, and enough capacity to last a day trip. Having a concrete list keeps you from impulse buying.

One more thing: consider your nicotine habits. If you're not sure what strength fits your new device, use our Nicotine Strength Calculator to avoid getting a device with the wrong setup.