As this board has a combination of new and veteran vapers, I'm just curious what your biggest regret is in vaping. I would say that mine is simply the use of the BLU cig as I failed miserably with it. This is not to say that they are horrible, because I know some people use these exclusively and successfully, but they simply did not work out for me. On the plus side, they did introduce me to vaping and at the very beginning I definitely thought that with vaping I'd eventually be able to stop using analogs.