Although its been awhile since I have purchased from them they were very good. I highly recommend the Banana Foster. Todd, who is the owner, is great guy. He used to be a member here before he ventured off into the ecig business.
The advantage would be that if it works to keep you off the cigs then thats great. Go for it. The disadvatages would be lack of availability of other juice delivery systems which almost all use 510 or eGo threading.
The site doesn't say what they put in the juice to increase serotonin & melatonin levels or to decrease appetite. What testing has been done on this product? Too many questions. Sounds like:
I dont believe carto tanks burn more juice, its that so much juice is absorbed into the filler it appears that the juice is being used faster. I never liked carto tanks. They were too much of a hassle for me.
I use cell phone adapters all the time. You can buy chargers at a lot of places. I prefer to only buy Joyetech rapid chargers.
The VT Store carries the charger and adapter
http://www.vaportalkstore.com/product-p/ego%20usb%20chrgr.htm