Before you look at puff counts or price, ask who your customer is. A heavy vaper who goes through a device in two days needs something like the VERTEX-25K or VERTEX-15K — high puff count, meant for extended use. A casual user who wants something discreet might prefer a slim option like the LINQ-SLIM. If your store skews toward new vapers, they'll want something simple and forgiving, not a device with a learning curve.

Ask yourself:

• What's the average usage pattern of my customers? Daily heavy users or occasional?
• Do they prioritize battery life, size, or flavor variety?
• What price point are they used to? Don't stock a premium device if your customers are value-driven.

Fit isn't just about the physical device — it's about the experience. If your customer picks up a device and it feels wrong in the hand or the draw is too tight, they won't come back. So get sample units, test them, and think about how they'll be received.