I think I'd say some thing kind of like no two are the same in a way. And by that I mean that each one has a little bit different technique. So that a bad experience with one might be because the vape itself is a piece of crap, or because of a technique issue.

All of that said, it is definitely worth the patience, worth it to your health, to vape instead of smoke though. So be willing to try a couple of different techniques when it comes to packing, or when it comes to how you inhale, to get the most out of the experience