I have two if that tells you anything. Provari would be my number one choice for VV. It's very easy to use and easy to dial in the right voltage for you. Everyone seems to have a different voltage they like.
It's a very well built
mod. I've dropped mine (unintentionally) several times, it just keeps on working. I have the original version with a satin finish, not the chrome or black. The finish has not been marred at all by the dropping. It feels good in your hand (some say it's too heavy). I use the extended cap the majority of the time, but in the evenings after a long hard day, I switch to the smaller battery and regular end cap.
I'm sure others will come along and provide a better description, and others will most likely mention some of the other VV mods. Everyone favors different mods so that's to be expected.
You can easily spend a ton of money on Mods, I sure have (see sig). I also use all the ones in the sig below. I wish 2 years ago the Provari had been available, I sure could have save a lot more money. As it is, I am just now breaking even, that probably won't last because I like to try the new mods coming out. But, suffice it to say, I have found my go-to Mods. Quite happy!