Got 2 of these and few replacement coils today:eGo 2.4ml CC CE4 Clearomizer I have used all kinds of these type clearos, this is the latest one I am giving a shot. First off, it holds 2.4 ml which is a pretty good amount. Two of these should last all day with ease. Clocking in at 1.8 ohms, it's putting out pretty good thick vapor. Vaping on some DIY Capella Strawberry at about 50% VG, no wicking issues which is impressive. Not a hot vape, but kinda warm similar to other clearomizers. Flavor is really good, vaping the same juice dripping on a joye 510 is pretty comparable. Seems to be made with higher quality parts then some previous gen clears. Nice hard plastic tank, screw on mouth piece and air draw from two holes in the metal base. Nice feature, I've been experimenting with covering them with a finger to effect draw and flavor. The changeable coil heads appear to capable of being boiled for cleaning and possibly rebuildable. So far I am impressed with these, no leaking or gurgling as of yet but I have only had them for about 6 hours. I am concerned of leaking from the tank/base connection. I will update if I find any leaking and when I attempt to rebuild the coil. Hoping it will actually be feasible on these ones. Overall, a good buy so far. Will see how they hold up.