I notice there are quite a few people here who have similar but not quite the same vapes. I'm always curious about the differences between them- the pros and cons. But we can't ask those kinds of questions in a thread dedicated to a specific vape. I'm not talking about rating which ones are best. More like: for those who own several butane vapes or those who have several different on demand wood ones like MVT, Milaana, Zion, Tubo. What do you see as the strengths and problems of each one.