I'm not one to complain, and while the stlh 5k has great flavour profiles, it has a flaw where after about a day or so the vapes malfunction and burn up, the vape goes off all by itself and the liquid leaks out and it gets very hot, it left a blister on my finger. It's dangerous and a waste of money. So if you like throwing money out the window, this is great for as long as it will work, but otherwise choose a more expensive option