I have a similar experience to Rob. I drip-filled 1.7ohm LR Ressurrector cartomizers from CCV, and the first two I used each last me 7+ weeks, with no cleaning, and no reduction in quality or draw before taking a sudden dive in draw at which point I broke out a new one, since my daily cost of use was down at about $0.03.
I use them on an eGo battery, with near-clear or totally-clear 66:33 PG liquid, so about close to perfect scenario for extending the life of cartomizers. I also can't vape non-menthol juice and if my 7 months of vaping have taught me anything, its that menthol seems to drastically reduce deposits. I've even had near-dead atomizers which have been reinvigorated (for 1-4 days) just by using menthol e-juice. The short life that many here have described is more like my experience with eGo's atomizers. If I could buy stock in Ressurrectors, I would.