Wanted to add:
My biggest problem with the overall design of these is the syringe filling and the fact that the filler ring interferes with my cleaning method. For my "test" last night I used a syringe just to see if there was any difference in the amount of juice these things took (there wasn't). I want to be able to drip fill and clean these quickly, and for *me* that involves losing the filler ring. Some people might have no problems with the stock carto, but if you're going to pull that filler ring out for convenience you'd better have some PTB in there to prevent leaking. I know br has had good luck with his drip-tip, but that method might be beyond the average users reach. ANYBODY can learn any of the PTB methods in just a few minutes, and it's very cheap to do. It also alleviates any wicking problems you might be having. It may not be perfect, but it's good stuff.
My biggest problem with the overall design of these is the syringe filling and the fact that the filler ring interferes with my cleaning method. For my "test" last night I used a syringe just to see if there was any difference in the amount of juice these things took (there wasn't). I want to be able to drip fill and clean these quickly, and for *me* that involves losing the filler ring. Some people might have no problems with the stock carto, but if you're going to pull that filler ring out for convenience you'd better have some PTB in there to prevent leaking. I know br has had good luck with his drip-tip, but that method might be beyond the average users reach. ANYBODY can learn any of the PTB methods in just a few minutes, and it's very cheap to do. It also alleviates any wicking problems you might be having. It may not be perfect, but it's good stuff.