The clearomizer that I have been using have been real good, the only thing I don't like about them is the cracks that they can get. I think they need thicker plastic and most likely a different type of plastic. Looking at some I just got, I can see some small cracks already around the bottom- been using some Scotch tape around the bottoms to help support the plastic and keep the juice in. Only use the little rubbery tips that they come with for the top, drip tips that I could use on the metal carto's will not work on these. Will most likely have to do some syringe mods to use the inters from the split clearomizer's that I have. So far 3 out of the 10 I first got have split so bad they will not hold juice, but the wicks and coils are still good.