I actually picked two of these up a couple of weeks ago when they popped up at indyvaporshop.com. They were smoktech tanks, which is where all the various suppliers seem to be getting them from. Indy, Volcano, and MV seem to be the only suppliers of the smaller/narrow tanks that I've seen so far. Based on their popularity though, it's only a matter of time before they start popping up everywhere.
I'm going on three weeks with the original carto so far with no problems. Haven't had to modify a thing on them. The tube is a much thinner walled polycarbonate than I like, but so far no cracks. I have some VPX cartomaters that are several times thicker in comparison.
