It is an all glass heating element.The heating element in the vivape is glass? or is ceramic with glass around? i thought it was the last.
Yeah I can understand how it might have had sentimental value for you, but that isn't enough to convince me to add it to the list. I have some sentimental value for a crappy old soldering-iron-under-a-jar vape, which was my first one, a decade ago, but I'm not going to include that or any others of similar quality. There's a plethora of poor-quality vapes out there, and I don't have room (or time) for them all.
Anyway, I've spent a bit of time trawling the vape sites, and have added a bunch of more info. I also discovered the 'hide column' and 'hide row' features. So I've hidden a few of the listed vapes from view until I have more info for them, and I've also hidden some columns - namely 'efficiency', 'size' and 'weight'. I'll un-hide them once I have most of their cells filled.
If your using that reasoning then I wouldnt include any vapir models. If your going to include the No2 then I think you should also include the mini. The No2 is basically a combination of a previous not in productionmodel (vapir classic) and the mini with the battery unit on the inside, while the mini is a smaller and has an optional external battery. Both units function similarly. I dont care either way, and i only mentioned my sentimental viewpoint fo reference. Also i would never compare vapir mini or any vapir model to a soldering iron...
IMO, as well as, most "experienced" vaporists would consider any vapir models as crap. However, I think they are a great buy for any novice looking for their first vape. If you are completing a comprehensive list, it only seems logical to include the mini. It is still in production, and is a smaller cheaper version of the No2 with the same functionality and reliability...they both function great, but if you drop either of them onto concrete more than a couple times they will definately break.
In summation; i think if your completing a comprehensive list, which you are, then you should either include all vapir models or none of them.
EDIT: and as far as your information of thermovape cera, the method is mainly convection with a little bit of conduction (most portables). You also have it as not being able to do oils, which it clearly does!
Also vivape load size ~0.2-0.4g. And list price is 399$ but it has been retailing for $289-299 from most online stores