The DaVinci IQ, in my opinion is flawless in design, and delivers as stated by them, and their consumers. As with everything, there is a learning curve. If the unit is over packed/tamped, the unit will overheat. Weigh out your herb (don't eyeball it) and grind to the consistency as recommended by DaVinci. I have nothing but praise for this product, and as far as their customer service goes, they go above and beyond.
Definitely my go to marijuana of choice, recreationally, and medicinal. Great for my aches and pains, as well as enjoying a good ol' fashioned rip. Peppery, citrusy, and earthy taste/flavor. Great product!!