Hi Reidus, shout out from new orleans, yo.
To will2098:
Someone above me told you to sorta stay away from auto batteries. I'm going to recommend you do that as well. Manual batteries are going to give you a more consistent and deeper hit. Plus it puts YOU in control of the device instead of an air-flow sensor. Once you get used to it, pushing that button just becomes 2nd nature and you don't really think about it much. The volt has been recommended to you, and I certainly think it's a good device. Vapor4Life is also a great kr808 vendor with decent prices. They normally have sales though between 20-30% so make sure you look for an online coupon.
As for filling, this is incredibly simple. Pop off the little rubber cap, add a few drops and you're back in business. I spend less than a dollar a day vaping and you can too. You can buy the pre-filled ones and then back that up with a bottle of their juice. Say you buy 5 grape cartos, just buy a bottle of grape e-juice and top them off every night. Doing this will help you ease into the refilling idea.
The last thing you really will want to consider is your lifestyle. If you are an office worker, or a person who has easy access to power all day long etc, a kr808 system will be fine for you. If however, you are a construction worker or person who doesn't have a power source all day long you should go with a fat-battery model which will give you longer run time between charges.