The Grasshopper vaporizer by Hopper Labs is the first vaporizer to come to fruition via crowdfunding. It has taken them a while to get to where they are today in 2018 with the original crowdfunding backers waiting roughly 18 months to get their units, followed to a pre-order period during 2015 and 2016 with wait times as long as six months. Now as of 2018 they are shipping on-demand with no more pre-ordering.
The Grasshopper is currently rated a 9.1 out of 10. It is one of the highest rated portables excelling in size/portability as well as discreetness due to the quick sessions and is one of the least smelly vapes.
Read the complete review [Vaporizer Wizard June 2018]