I've got a 510 tank system and I like the tanks fine, but it's starting to annoy me. They leak in the PCC, the air channels get clogged, I get juice on my fingers and clothes, and I have to refill them more often than I would like. What kind of set up would be simpler and cleaner? Cartridges, cartomizers, clearomizers, drip tips? Also, is there somewhere I can get prefilled 510 cartos/carts for less than $10 a 5-pack that have good juice?