I've seen where everyone is filling up the 901 carts and such, and as a vaping noob, can someone tell me the difference between the 901 carts and the carts from smokingeverywhere.com? I would like to know if I can refill these as well because I'm running into the problem that the carts are not lasting the 20 cigarettes as advertised. I want to do the liquid refill because that will end up being invaribly cheaper and if anyone has and personal preference, please let me know where to go to buuy the really good liquid. Thanks and Welcome to my Day 2 of vaping! No more analogs for me. 8^)