have not tried BigRingVR but the thing about "Amazing HD video quality" is that they need to be filmed from a bike, not a car. all the rouvy rides i've done are 2k minimum. nice to see the 4k as well but i consider the quality still poor due to the slow motion effect of everything. i just did another ride in Oman yesterday and it appeard to be done from a bike, movement of passing cars and pedrestrians was more normal.
looking forward to FG quality vidoes in rouvy.