I have only been in the Texarkana store but, it is clean, wel organized and they have friendly and helpful staff. They do stand behind what they sell, I have had to return one clearomizer because a new flavor I was testing for them turned out to be a tank cranker and, no problems, they gave me two to replace it as a thank you for testing that new flavor.
As of 7/31/2013 not all of their flavors are online but, if you contact them and ask for a flavor they will get it to you and, if you have a custom flavor in mind and ask them, they will mix it for you as well.