I keep going back an forth on this. My 3rd choice keeps creeping back into this, which is the Legacy Mini with a kick. If I went that route it would give me be of both worlds, 3.7 volts if I choose or watts. I already have a Young June vv which I use daily. I guess I will do some more thinking.
I have the Provari mini, Provape 1, and a kicked Legacy.
There is not doubt the Provari is the choice here. I know some people hate the Provari and that's fine, but it is a superior PV and the variable voltage provides an excellent vape. I love the Provape 1. It looks and feels awesome. It's small too. But it is limited to 3.7v unregulated. That means as you use it the voltage output goes down more and more until it no longer fires the atty/carto. It just doesn't have the oomph needed to give MOST people a satisfying vape. I like it as a back up, but definitely not as a primary device. Battery life is short too. Now if you are one of those people that uses LR attys then perhaps the Provape 1 will do the job for you, but is it still limited.
The Legacy? Well, let's just say it's not my favorite device. It's made in the USA and it looks cool, but the bottom mounted button just isn't getting it done for me. Maybe you might like that, but I find it somewhat awkward to use. Also, as much as I LOVE the Kick (and I really do), it is limited due to the power requirements needed to make it work. Once it stops working, the battery might only be down to about 3.5 volts. I have had 3 Kicks and all of them start having consistent firing issues once the battery drops to those levels. In fact, it stops firing long before the battery stops firing in the Provari. A proper connection is also paramount. You will find yourself unscrewing the device's top cap over and over to get a better connection to make the Kick fire once again. Don't get me wrong, I use the Kick daily in my Bombshell Stinger and even in the Bolt. I even use the Legacy from time to time, but it is certainly not a primary device. One thing I really dislike about the Legacy is the use of coarse threads on both the bottom and top caps. These threads don't have the "grabbing effect" that fine threads offer and as such, the bottom cap has a tendency to unscrew when you are simply unscrewing the button lock. One final note about the Legacy. There is some fiddling necessary where the switch is concerned. Depending on the battery and whether or not the Kick is used, you may have to add or remove washers just to get it to fire. If you are not a fiddler, then stay away. I'm not saying it's difficult, but it is something you have to mess with.
Just some things to think about. Regardless of which you choose, they are all nice devices. You might want to actually consider a fully variable power/wattage device as it truly offers "set it and forget it" capabilities.