So many choices for a mod and a multitude of posts on which one is the best make for a very hard call. Thanks to all ECF member who have spent time posting reviews on the various models. In the end the Provape won the race for me. Placed order at 6:00pm units shipped by 6:30, That is quick. Let the stalking begin. Thanks again to all those who provided direction and I am certain I will enjoy my 90 day smoke free gift to myself!!!!