Can anyone tell me if these are worth the bucks? They're certainly not cheap at around $100. Here's a review from ECF. This part kind of annoys me: The LCD screen will not completely TURN off.. Even though in menu item 6 you can turn the display off.. When you push the buttom you still get a blue glow from the right side of the screen so if you are like me and you vape at the movies.. You cant get a completely stealth vape with the device.