Been using it every day and like it. I know to each his own but why is this type of unit not more popular? It folds up and fits in my pocket. I've broken several stick batteries, putting them in my pocket and then siting down. Long mods are just too big to even go into a pocket and I'm not going to wear a unit on a rope around my neck. The sleeve that covers the tank is only good if your tank is 11mm, but the unit works just fine without the sleeve with my Smoktech ARO V2. It has 510 and ego threads, so just about any tank would work, but when I used my Nautilus mini I was unable to fold it all the way up. I've already dropped it twice, once from 15 feet ,down to a hard service floor and no damage done.
The instruction manual was pretty much useless. Like most that are written in Chinese and translated into English. It didn't say anything about the fuse, and if you put the fuse in wrong the unit will fire without pushing the fire button. I still prefer my iStick with Nautilus mini when I'm sitting here at my desk, but when I go down to my shop or go shopping I put the R80 in my pocket and take it.
Hell-0, Have a nice day. (I can say that here, this is not ECF)