Dry Herb Coils
This may be the least available of the three major options. In terms of true convection vaporizers, the chamber is never replaced and should never be removed, there is no need. However, with combustion vaporizers, the design and process is different, and similar to wax, although not as much, the chamber will need to be replaced over time.
Glass Globe Atomizers
Pairing a glass globe with any vape coil that can use it will improve the vaping experience. The extra space provided by the globe allows you to accumulate vapors in order to take a larger puff. In addition, the vapors have more time to cool and will offer a smoother, tastier vaping experience. You can find many options from standard bubbles to cool skull globes.