I am also big Vivobarefoot fan. I done all my trips in them for the last year and been running in them longer. I use the Breathos for backpacking. I can walk in them forever. Agree on the durability is not ideal, but that can be said about pretty much all barefoot type shoes really. The toe box is nice and wide. Unlike the Merrells, they aren't as glove like. A snug fitting shoe for running is one thing, but for multi-day hiking, it is another.
I also wear the Inov-8 BareGrip 200 for running when it is muddy on the trail. They have amazing traction, but I would not want to hike in them long distance. Too tight toe box for racing.
I've started wearing the new Inov8 Trailroc 150, which I like for running (use them instead of my Breathos now), but for me the crinkliness and lack of softness to the upper makes them uncomfortable for long distance hiking.
I have no experience with the New Balance line.
Ultimately, the thing vastly more important than shoes you pick will be conditioning your feet, ankles, achilles, and especially calf muscles. Take it easy. And look online for exercises you can do in conjunction with your transition. Unless you have super fit feet and legs from other activities, think of it like a new sport that you are required to use muscles you don't normally use. You have to train and built up to it. Approach it like you are learning to walk again with a new set of legs that are out of shape. Or risk injury as you would in any sport you are not conditioned for.