I bought a pack of the CE3 X7 Smokymizers and they were terrible. First one out of the box was doa, next one gave burnt taste every other vape. Terrible. I put them aside and ordered some other clearomizers, then decided to pull the CE3 X7's out and give them another go. They all were the same - the ones that did work, just burnt hits. yuck. Chucked them into bin.