If you are walking stalking, then habroks which have thermal, bino, and range finder, and if you are captain thickie like me, the compass can be useful, if for no other reason than to take the direction of where the deer fell from where you are. The amount of times a deer has fallen and disappeared and I have walked up and down and up and down.
I prefer monocular for foxing and in close woodland, lighter to use and I am more likely to be twisting my head in all directions.
Monocular will kill the nightvision in the eye you use and cause more strain.
Binos much kinder on the eye.
Anyhow, I have the habroks, they do what I want them to do.