Catomizers are nothing more than an atomizer with the cartridge built in. They hold more
juice than a cart requiring less filling. They still need to be topped off occasionally.
Clearomizers (aka CE2, Fluxomizers): A filler-less, tank cartomizer. It relies on a wick to carry the liquid to the coil. The coil is at the top, close to the mouth. It provides a warmer vape, flavor is close to dripping. May require some modding to get them to work to their potential but it's worth it. The clear tubes may crack resulting in leaking and a mouthfull of
juice. The new Fluxomizer Deluxe from GotVapes have new tubes that do not crack.
Smokimizers (CE3) are similar to the CE2's except the coil is at the bottom resulting in a cooler vape.