Boge normal stuffed cartos are the most popular. Slim ecigs can use standard resistance. Any batteries 450mah+ can use standard (3.0-ish), LR hotter ones (2.0) or if you can find them, the medium ones (2.5)
I get the longest good performance out of them using juices with 20% VG or less and no sediment in the flavoring. Nice clear juices.
I like to use a plastic or delrin drip tip as a mouthpiece (but not to drip into since they have a central air channel)