Vaping vs. Smoking?? Comment.

Bree • Been with my fiance for two years. Pregnant with #1!! Due December 2015
So, I'm 7 weeks pregnant, and I got my vape in the mail today... I'm going to attempt to try and quit smoking. I've already cut back from a pack a day to about 7-8 a day. I've only had 2 today because I've been vaping instead. I'm going to try to just vape, and eventually progress down to 0 nicotine juice. I just want to hear everyone's opinions on vaping? Vaping or Smoking while pregnant? Comment and tell me, and please state why.