I get blank boge 510 cartos, 15 of em for 20 bux. Cheapest I found at crystal clear vaping. I don't think they have 808's or anything like that. I like em a lot, I keep a couple going at a time with different flavors and they have been lasting me at least 3 days each. I go thru more by losing them or giving away to friends. The boges have a very clean taste compared to others I've tried, which u could taste burning filler after a couple drags.
Keep in mind most cartos have the heating element towardss the battery end so when u top fill be sure to fill from one side of the filler (not the center airhole) first and let it soak a little bit to the bottom before doing the other side of the hole. If u create a big flood in the top it will just float there without a place for the air in the bottom to escape, especially with thicler juices. When that happens I hold it tight and flick it til I see air come up (like u do with a needle getting air bubbles out)
Keep in mind most cartos have the heating element towardss the battery end so when u top fill be sure to fill from one side of the filler (not the center airhole) first and let it soak a little bit to the bottom before doing the other side of the hole. If u create a big flood in the top it will just float there without a place for the air in the bottom to escape, especially with thicler juices. When that happens I hold it tight and flick it til I see air come up (like u do with a needle getting air bubbles out)