Whispr Vaporizer by Iolite.
While it’s not without its faults (I’ve had to send mine back to Iolite twice to be repaired), the Whispr is my favorite vaporizer. In fact, I haven’t smoked marijuana in a couple of years as a result. The vapor it produces is rich, flavorful and smooth. It’s portable and very easy to use. Buy it here.
See my extensive review of the Pax here. The Pax is the easiest to use and most technologically advanced vaporizer I’ve tested. Like the Whispr, it also has its drawbacks. The mouthpiece is too easy to break and the vapor is a little hard on the throat. That said, it’s an excellent product. Buy it here.