If you haven't heard of or tried the new Smoktech PBC V1 or V2 they rock. The tank has a glass lining with polycarbonate outer shell, here is a PBC Article that goes into more detail. So you get all of the benefits of a glassomizer with the durability of a poly tank. The PBC V1 is 22mm I believe, the V2 is 19mm like most glassomizers. They remind me of the Artemas carto tanks in appearance but are bottom coil. Anyway, I highly recommend them, I use the V2 in my VTR and it works great!
