I did use Ecigs for around 8 months and was happy with it, until i broke it, and then went back to cigs.
This was before branded one's were in the shops, and u could only get them on the internet. I have since got another one, but just haven't made the switch, it won't be too long, as my lungs are starting to give out, as the cold weather is starting come in, and being forced to go outside at home and work...
I did have a lava tube, high resistance CE4's with an adapter using RY4 eliquid, although i would now recommend cherry flavour as my choice.
CE4' are good, but they don't last very long, you may only get 3-4 days out of one before replacement.
HTH