I am reading a lot about bad devices and I hope juul did not cheapen them and would replace them without question if there is a problem. That said I had tried many e cigs and vapes to stop smoking and juul is the only one that worked for me. I smoked for 45 years but was never able to quit for any any length of time and was miserable from constantly trying. When I found the juul (last November) I finally found the device for me. I have had the original device since without issue I order the lower nicotine pods and try to keep track of and limit my usage. Difficult cause that mango is soooo delightful! Giving four stars because of the bubble and leakage issue. Most pods haven’t leaked but what a pia when they do. Also the bubbles forming at the wick every few puffs is a pain. My routine now is to store the pods upright. Before each use shake the bubbles out. Wipe the outside of the pod with a paper towel and roll up the end of the paper towel and stick in in the mouth piece holes in case there is juice in it. Quite the process. Then every few pugs just gently hit it on your thigh and the bubbles come up Easier to smoke cigs but still worth it because I feel a heck of a lot better. Stairs and uphill climbs are no longer a problem!! Also juul service has always been wonderful when I’ve called.