Ok I've had my Buzz for awhile now and love it, it's taken my daily abuse and still vape's strong. Which of the two devices Buzz or Infinity or Infinity with tube will have the longest battery life. I have 3 sets of batteries for my Buzz now and may need more, I'm doing 12 to 16 hour work days behind the wheel . I'm running around 4.70 with the Buzz now. The main reason for asking is that I was about to get more batteries and a second charger for the Buzz, but if the infinity with tube will have a longer run time then I will get more battreies for it. Thanks for putting a Quality product out there for us. Have a great xmas and new years.