Well I love cartos and here is why, I have a good method I use and it saves me a lot of money. I spend about 200 bucks on
vaping per year. All I do is buy 50 blank cartos, a 30ml bottle of 100mg unflavored nic juice, and I still have a huge bag of crushed up menthol crystals (all i vape is menthol, nothing else)
I make my own menthol juice, and refill my carts anywhere from 4-5 times before tossing them, they are definitely a money saver if you know how to do certain things and set up a good budget for yourself. Overall I've probably saved at least a grand from analogs. I don't vape that heavily either, most days I only have to go through a refill once (using taryn's spin method to refill)