Welcome , but depending on how much you want to spend . There is a large choice of options for you to consider . While the Bolt ( fairly cheap ) , or the Provari ( kinda pricey ) there are also some other devices you might want to take a look at . These have VV , as well as VW , where the Provari , is only VV . Look at the Vamo ( around 40.00 ) stateside , or I just got one today from China , for 29.95 . It's SS and took less than two weeks for shipping . Also take a look at the Zmax . There is a Smok version , and a Segelei version ( ihave both , but prefer the Segelei ) . And now there is even a telescoping Zmax . The regular one is around 60.00 and the newest telescoping is around 75.00 . So lots of choices out there to consider . Good Luck , with your decision .