I can warn about one brand I looked into. I am still getting junk mail for them even now for trial membership deals. You pay shipping only until they get your credit information and then automatically charge for refills for stuff not only overpriced but is crap! Stick with the US vendors if you live in the states. Yet I've ordered from a few reliable places in Hong Kong as well with a PayPal account. A few note.
Reminds me that I need to ask someone about something a bit later. That in regards to a list of vendors I've dealt with so far and have had positive dealings with them. Have to run it by the staff here first however.
By the way they do have e-cigars and e-pipes. I tried out one but it had plastic inserts and was automatic while now I am looking at a manual soon to come with 510/eGo threading and variable wattage! Have some led clearomizers that will look interesting on it! Wooden body style coming out from Smoktech.
Equipment and eliquid will become two important factors each having their own preferences over time. My interest at first when having another smoker pick up a couple of disposables for me was to see how they were as well as worked and if they would be good for me as far as menthol. I smoked menthols due that putting severe allergies under control lawn grasses, dandelion, ragweed(this fall being the worst fall for me), etc. where I have to have some of antihistimine for a super nose!
Been putting up with that since I was about 10yrs. old. After a half ccentury finally a smoke free alternative found to work!
For others simply getting rid of a nasty trash can stench of a habit and living healthier is the key issue. Some will prefer to stay with the smaller cigarette size with led on end type while others want the rdas to make clouds with. Here I stepped up the watts at times not only for steamy menthol but when something tastes too sweet I bring it up a few notches and away we go!