So bought the 510, and struggled with cartomizers vs carts. Spilled a bit of liquid, sucked a bit of liquid. Discovered the shortness of battery life. Ordered a PCC that doesn't work. Accidentally ordered juice with 0 mg of nicotine. So overall it's been quite an adventure. Hoping to find some blue foam. Haven't blown my atomizer yet. Thinking about getting another battery. Wondering if any of the PCCs out there are any good. Just put in an order with vapor4life for the fruity sample pack and more clove. So far only tried clove and ry4. Clove is nothing like Djarum Specials that I used to smoke. Liked the clove cartomizers that I received from Rocky Mountain Vapor as an apology for losing my order and taking a very long time to deliver, over a month. But paying for the cartomizers seems over the top expensive. Wanted to post to the pay it forward or juice swap forums but as I'm a new member I'm not allowed. Wish you well.