So far it's working pretty good and really easy to change voltages. The changeable atomizer/
tank system it has is alot better than the eGo-C system and has different ohm options for 3.3-5 volts. The Tidy Cartos it comes with are just like the phoenix bottom coils from Gotvapes. Both the atomizer/
tank and Tidy Carts need a good break in to reach true flavor potentiel. As far as the device goes it's solid with a unique LCD screen that just looks like a chrome mirror finished plate instead of a screen. I measured it out on my multimeter and it's dead on...if I set it to 5.0 my multimeter says 5.02. You can also plug a tiny cable into the bottom and use it as a PT as it's charging wich is nice. Oh yeah, the magnet system is a great innovation...diggin that. Just snaps right in and stays sturdy.
I'll have a video review up not too long from now after I do the V-Max review.
Happy
vaping!