Every vaper is different, Tvan. You'll find yourself developing a vaping "style" as you gain experience. Many of us here vary our nic levels during the day, not at all unusual. And many of us keep some (to us) high-nic juice on hand for stressful times or to work around those "gotta have a cig" moments. But the BigL is right, whatever keeps you vaping and off the cigs is good!