I'm really liking the "genuine Joye 510 cartomizers" I got from Cignot (fill with syringe type).
The giant "Joye eGo" ones less so -- but I still like them. The concept is great. It's just that the draw is a bit too airy for me and they leak when full (or maybe overfilled). The thing is that the plastic outer just sort of snaps onto the thread/barrel portion at the bottom. I carry my BB/SB with the carto up, either in my belt holster or my pocket. That means that I tend to grab the thing by the whistle tip to pull it out. Eventually I always end up pulling off the plastic outer. It's not like juice floods out or it ruins the thing, but you have to notice it and then snap the barrel back onto the base... and like I said the draw is a bit too airy for me. The regulars are just right on the draw. only wish they had a textured whistle tip and a little more capacity.
Yup. They taste great, but they do leak when full--from the little hole on the bottom. I also had one that just leaked from the seam at battery end. My biggest problem with them is that they don't wick fast enough; I always have to take breaks between puffs...