I got my provari yesterday and I have to say it is the best quality pv I have seen so far. Nice solid feel to it and bright light display. Works like a champ every time and with the settings you can turn off the light to save battery if needed. Settings are easy to navigate once yo get it figured out and the 510 connection is set flush and not set down into the top so you don't have trouble connecting tanks on it. Also the connections is a nice solid metal so it doesnt feel soft and gives the idea it will last forever. I am in love here!