I am 73, and my cannabis is not today’s cannabis..lol. I finally decided to start vaping because a fixed income is not compatible with buying weed. I spent 2 days researching which one to buy and the difference between vaporizer and pen…. lot of research out there. I decided on a DaVinci only to discover that is does not use cartridges…lol. Back to the research (not having to go to the library for research STILL awes me..lol), and Yocan came up. I was looking for performance, and convenience with a good price. I no longer have the patience for a lot of moving parts, and this little beauty definitely fills the bill. Thank you for making this available.