FAQs: Frequently Asked Questions About Electronic Cigarettes
Everything in here's a great read. Your question is tough one to answer, depends on what's important to you. Cost, battery life, size, looks, power....etc, etc.
Personally I started w/an itaste vv, loved it for variable voltage and pass
through charging. But to each his/her own.
I do recommend trying several types of
tanks/atomizers to figure out what you like best.
Try all the flavors you can get your hands on, if you have a local store w/a tasting bar, you should go check them out. And try EVERY flavor...I was shocked by what I liked and what I didn't.
Read, read, and read some more on ECF. YouTube is also a great resource.