When you've confirmed a real gap, then look at new devices. Use your gap list as a filter:

• Does it match the size and battery life you need?
• Will it work with your liquid or prefer pods?
• Is the nicotine strength compatible?

If a product doesn't clearly fit your gap, it's not the one. This is how you avoid the classic mistake: buying a new device that's basically the same as what you already have.

Also, check for authenticity before you buy. Counterfeits are a real problem, and they don't perform like the real thing. Windbar's Vape Authenticity Checker can help you verify you're getting a genuine product.