This video puts two 2k cameras side by side. Viofo takes the edge, with slightly sharper video and a super-capacitor. The Vantrue has slightly better color/exposure and less distortion.
The VanTrue X2 is a 2K OV4689/Ambarella based camera with decent video quality in all conditions and good looks.
Summary: The N2 is a dual lens setup made for viewing the road and passengers at the same time. If you’re looking for the type of camera to view in front of and behind the car you will either need two separate cameras or a unit that has a secondary camera on a wire and hangs from the rear window. This kind of camera is more for taxis or Uber drivers who need to keep an eye on their passengers.