The Evic VT is sleek, has a large clear screen and is very precise in it's regulation delivering a smooth vape in either wattage or TC mode. It's built-in 5000 mAh battery will last you days before recharging. Only downside is that the full kit only includes the TC coils, and regular coils must be purchase separately.
A single 18650 in the Kbox might last you a day, but the subtank seems to have a lot of fans. While the RBA section was improved [again], Kanger changed the coils from horizontal to vertical; good for the clouds, not so much for flavor.
The new car finish on the Evic is nicer than an anodized finish, plus it does come with a protective silicon sleeve. I've had my Evic VT for several days and have been enjoying it greatly. It was a nice step-up from my iStick 50W, with nearly the same form factor. The vape is smooth and powerful, the button is firm and clicky and have no negatives to report, except the Ego One Mega is a bit noisy