Modnote: Title changed to facilitate discussion. Mistic - $7.99 BHO Wax e-Cig (title changed) I have a number of e-cigs that I use: Mistic $7.99 - 1 Large Battery, 1 cart, lots of smoke and good battery life. Cigarex $59 - One Large Battery, 3 carts Cig2O $25 - one battery, good smoke, decent battery life. No.7 $59 - 2 batteries, 6 carts Vapure $100 - Two small battery and small diameter. Doesn't last long. Don't waste your money! Got 3 grams of local BHO wax and started experimenting. After a few hours of tinkering I am glad to announce that I have the following loaded with about .5 grams BHO wax each. Mistic, Cig2O and No. 7 have been successfully retrofitted and are providing great quality, pure BHO vapor. My recommendation would definately be the Mistic. You can pick one up with battery and full cart for $7.99 or pay $29.99 for the Starterpack and get the USB charger and 4 more carts: http://www.misticecigs.com/ My Cig2O and Cigarex e-cig USB chargers will both charge my Mistic so it appears that the fittings are pretty common. I have some video of the whole process.