Leica Geosystems used to sell phase-based scanners. These units were actually rebadged Zoller+Frohlich scanners. But the partnership ended a few years ago when Leica introduced the Pxx series. Today the company only makes time-of-flight scanners.
Great project! but the title "3D scanning like a pro" is quite a stretch. Real 3D scanning pros use something like this Leica P40 scanner:
https://www.youtube.com/watch?v=GnmerVV5-T4
With real-time kinematic service, our GPS receivers give you 8mm horizontally and 15mm vertically. And you will get 3mm hz and 4mm vertical with post processing.