Ive had the e-cig a while now and I love it . I have a 510 and Ive tried regular cartriges , teabag mod , cartomizers . one thing Ive noticed with e-cig vapor is that it dissapates pretty quickly ,and as we've all seen if you hold in the vapor it will dissapate in your lungs too . I was thinking about this and I thought that the vapor , droplets of water, are delicate , and they will dissapte quickly from agitation . If you inhale on the e-cig fast or hard you actually help to dissapate the vapor before you blow it out . If your like me and like to see large volumes of vapor I have found that actually inhaling slower and more gently actually helps leave more of the vapor intact so when you blow out theres more visable vapor . just my 2 cent