Air vs. Alpha vs. Firefly, my impressions and opinions:
After a few weeks using these daily I think I gave them a fair trial, and while the Arizer Air is easier to clean, the Goboof Alpha is more portable, and easier to use; the Firefly is less practical than both but offers superior taste and power.
The user interface on the Air is slow and clunky, it takes nearly 10 seconds to set it to the previously set temperature. The Air has more temp levels, but top temp is only equivalent to medium on the Alpha. The Alpha's rotary dial makes temp selection effortless, but it does need taping if carrying in the pocket so it doesn't turn on. The Firefly requires extensive practice and extra batteries, and it's hard to get consistent abv, but you get goods hits when you get everything just right.
The Air takes the edge in ease of cleaning and slightly in taste (a freshly cleaned Alpha tastes the same IMO) The Firefly gives a pure convection taste, but it's inconsistency and battery life really limit its practicality as a portable.
When it comes to on-the-go vaping I like a discreet portable that medicates quickly, and while the Air works for that purpose, it's e-cig looks, long heat up time, and low max temperature hurt it in real-world use. The Alpha is very nearly an ideal portable, as long as you tape the wheel before pocketing it. The Firefly is really only a semi-portable, as it benefits from stirring and extra batteries, but it is a great home or travel vape.
The modern portable vaporizer market is very competitive now-a-days, with all the options it's nice to see products playing to different strengths. Whether you want the cleaning ease of the Air, the taste of the Firefly, or the portability of the Alpha, there's a vape for every situation!