Another product for your consideration: "HyperTank BCC"
"It is the biggest Glass Clearomizer with bottom changeable coil, which can hold max 5ml ejuice.Each HyperTank consists of a glass inner tank,an aluminium outer tank,a bottom changeable coil, a stainless steel top,a removable stainless steel base and a replaceable chrome 510 drip tip. The inner tank, which hold the ejuice directly, is made with the glass material Pyrex. The aluminium outer tank is an inseparable cover above the inner tank and does not touch ejuice. The outer tank has 4 windows, so you can see the ejuice level through windows easily. HyperTank has the same bottom coil heating system as Kanger Protank & eVod ."
2. 5ml tank
3. Same coils used for Pro-Tank (v1/2) & eVod
4. Sharp looking color options
1. Limited Reviews at this point
If this thing performs, a real winner!