What is the best electronic cigarette and where can I find free trials?

There seems to be several different varieties.

I was wondering if you, Y!answerers, have tried any of these and would like to share your experiences. What do you like of dislike about the product.

Also, I have heard about free trials on these products. Can you show me where to find them?
thanks canux, I was hoping to hear good experiences. But if the product is not good, I don’t expect I will.

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