The SMOK Nord 2 has been around a while and stays popular for a simple reason: it's flexible without being complicated. A single 1,500 mAh battery powers it, the wattage adjusts, and it comes with two pods, an RPM and an RPM 2. Between them you can run a wide range of coils, which is what lets the same device do a tight mouth-to-lung vape or a looser direct-to-lung one depending on what you fit. It also has pod detection, so it recognises which pod is in and sets itself accordingly rather than leaving you to sort it out. The pods refill easily, so you're not tied to any one e-liquid. It's a sensible middle-ground kit, more adjustable than a basic closed pod but still easy to live with day to day.