I'm trying to figure this out, so far I'm coming up short. The only Taranis I've seen in a flite test video is when they flew with Trappy. He had one I believe.
From what I've found so far...
Eric flew Futaba
Alex flew Spektrum
Peter flew Spectrum and Graupner
Josh B flew with Spectrum, Futaba, Hitec, and Graupner
Josh S flew with Spektrum, Graupner
Chad flew with Spektrum
David flew with Hitec
The beginner series video features Futaba T8FG, Hitec Aurora, then Spektrum Dx4, 5, 6i, 8, and 18, and one of the older Graupners. I'm not saying there isn't one in the videos, I'm just saying I'm having a lot of trouble finding it.