I am still pretty new to vaping. I started off with a cigarette like ePuffer Colibri kit. That was what showed me that vaping could work. I then found ECF and spent two weeks puffing away on the Colibri and reading and reading and reading some more. I finally settled on 2 eGo 650 mAh Twists with some CE4 or "Startdust" clearomizers and some Kanger horizontal coil cartomizers that I am not crazy about.
Since then all I have added is another 1000 mAh Twist for at home, a Kanger T2, Kanger T3 and Vivi Nova. I really do love the eGo Twist and so far have no desire to "upgrade". The only battery I have looked at and will probably order is a Vision Spinner - but only because they have them in purple and I wanted to compare the Spinner to the Twist.
The best part is that I was not even planning to quit (didn't even really want to) but once the eGo Twists arrived - I just stopped smoking
I think that you can get caught up in all the various devices that are out there and definitely it is very easy to just want to keep trying something else. For me - I am happy with the Twists. Now if I could find a delivery device that I loved and an ejuice that I loved that would be in vaping heaven