Also, I think people who say the one button thing is hard, haven't tried it yet. It's easier to me than the Vamo controls.
Neither one bothers me really, I don't find one more useful then the other, the Vamo is a little faster when your using it but you have to turn it on/off when you put it in your pocket so you don't change your settings so it's almost a wash. I do find the Vamo easier to use when I am building coils on a Genesis though, it's faster to move voltage up and down while you work the coils and faster to check resistance with. I also like that it doesn't fire the coil when it checks resistance like my Provari does. Even if you hate them for $40 it's worth having one if you use Genesis atty's a lot.