Hello, I have been a smoker for many years now and my cigarette of choice is Marlboro lights in which I used to smoke a pack a day or more. 10 days ago I purchased a century 21 starter kit and have been using it instead, I'm enjoying it appose to smoking and feel much better then I previously have though I still have to smoke 3-5 real cigarettes a day but now they are starting to taste terrible. Buying century 21 pre-filled cartomizers can get expensive at 6$ a pack of 3 (I usually use about 1 a day but my girlfriend also uses this so It's costing 6$ per 1.5 days) so I decided I want to buy some liquid in order to refill at much cheaper cost. Also century 21 offers normal and menthol without a named flavor in my local stores but they do have flavored liquids (which is pretty expensive @ 12$ per 10ml) online. It seams like the normal flavor I purchase in the local store is a random flavor from their online liquid list and the flavor I got last isn't appealing to me. So the question is: Would refilling my pre-filled century 21 cartomizers work without problems if I change them out every few days? Second is I need to find some good juice to use that taste good and is a reasonable price. I'd like to buy 30-50ml or more depending on price at a time and I would prefer something tobacco-ey as sweet/fruity flavors isn't too appealing to me. I'd probably try 18ml nicotine but I have no clue what pg/vg ratios I should use either. From what I've seen ry4 seams like it would do the trick but I'm yet to find a decent price from a good distributor. I'm also not interested in buying from a non US distributor due to shipping prices and safety concerns. Any suggestions on flavors and distributors is welcome and appreciated. Thanks!