Pod devices are specifically made for a thicker juice like "nic-salts" or "CBD" based juices. The coils are built in a way that allows for the ticker consistency juices to be properly absorbed. Regular ejuice will not work in a pod device and can cause leaking or other problems.
We carry the pod devices that we have considered to be the best. When it comes to options, there are a ton of fly by night companies out there who make either cloned versions of popular brands or quickly designed models that poorly perform. We have tested over 50 device and decided on only the best to carry in our store. You would be surprised that only a very few are built correctly, which is why our inventory is relatively small. We do not believe in selling inferior devices.