That said after 2 weeks with the the Vuse e-cig it has the same problem. the cartridges wear out after about a half a day. At $3 a cartridge that's about $6 a day which is too much. Taste is ok but everything else is pretty nice. The dual lights for out of power/out of juice are very nice. I'l bet other companies will come out with something similar if they can, it's that good of an idea.
But in the end I'm sticking with my logic-c e-cig. Their $4 cartridges lasts a little over a day for me and the taste and vapor strength are nice.
If I see the V2 e-cig I may try them out.