They all work, and do the same thing, but what do you want? If the cheap ones die, what do you do? Where do you send it to get fixed? The Vamo and Zmax both seem to be performing well, I've heard of recent issues with one version of the Vamo battery spring of late. I've also tired of disposable units, the EGO's for example, great when they work, but when they don't, throw it in the trash because it's done. Then you have the "I can buy three or four of these for the price of this......" Yes, you sure can, if that's what you want. Are you going to be hard on it? Are you going to drop it, will it fall out of your pocket or purse once or more? Will it work after that?
I don't have the answer you want or need. I have a cheap Lava Tube and spent $40 on it, it's fine for what it is, but when it breaks, it goes in the trash can! I went through a bunch of 808 batteries, drop them once, junk, run them more than six months, junk, throw them in the trash can!
I tired of throwing good money after bad, and throwing things away. It took a lot of doing but I saved up for a Provari and had a lot of hesitation about buying it! I don't regret it, I can drop it, I can weld with it in my pocket, it can roll down the driveway, and it still works. The day it doesn't, I box it up and send it back in then when I get it back I know I can start all over again!
Everybody has their own wants and needs, I made this decision based on mine, you need to find your own to make your choice.
