CCELL cartridges are hands down the absolute best for vaping cannabis oil efficiently. I provided a link back to a great resource explaining more. These are the best type of cartridges to vape THC Oil without wasting any. They have the dart which recently won high times award for Moxie. High times posted the results of this dart pod with Moxie THC oil winning on their Instagram here https://www.instagram.com/p/Bx8z1jDAvl2/?utm_source=ig_web_button_share_sheet Ive tried CCELL and they are great carts for vaping cannabis oil! Highly recommend them!