E-Cigs are new technology. They are following the same path as all new technology.
Compare them with cars. In the 1920's when cars were new, there were hundreds of manufacturers, each with a claim that their's was the car to end all cars. There were thousands of novel mechanical attachments you could buy that would make your car do 200 mpg or go 100mph. All of these cars and accessories had thousands of people who supported them. In those days, if you owned a car, you had to be a mechanic to keep it going, even though the manufacturers said you didn't. 90 years on, you can go in a showroom and just drive away, without knowing anything about how a car works.
All sound familiar? E-Cigs will go along hundreds of dead ends until a real consumer product is produced. It all takes time and technology improvements.
At the moment, all you can do is experiment with whats out there and see what suits you, and what you can handle without swearing.