After reading through the forum I believe I am going to go with the 510 with manual batteries. I have never used an ecig yet and smoke about 3/4's of a pack of Marlboro menthol lights a day. 
 
I guess my main questions are, 
 
Where to buy? 
 
What all do I need to buy to make sure im ready to start using it when it arrives? 
 
How does the liquid work? 
 
Will I need to buy refillable carts separately? 
 
What liquid would best match my usual Marlboro menthol light cigarette? I am not looking for something flavored, but more of something that if I closed my eyes it would taste the same as a real cigarette. 
 
I don’t want to spend too much, but I also don’t want to skimp out and not get a good first time experience with it. 
 
Thanks!