but honestly, I prefer my pyrex smoktech aros... they're cheaper, the coils are cheaper, and they're a little easier to rebuild than the protank (it has to do with how far down the coil sits when it's screwed into the tank base - there's a little less margin for error). The aros and the protanks vape the same, so it comes down to how much you're willing to spend and how much you'd prefer the removeable driptip that comes on the protanks.
Thanks Sean ... I'll check the Aros out ... I really don't see me rebuilding my coils I'm pretty much a "plug and play" kind of guy (translates to lazy). A big concern is the diameter of the tank, it needs to fit into my VTR, I hate the looks of the extension needed to fit the wider tanks.