NDhunter
Experienced observer
If you are concerned about build quality I would steer towards something like a Nikon Monarch 7 or Vortex. So many new producers have high sample quality variation and no track record for support. There are many options for high quality optical performance at all price points these days, and I think build quality and along with it warranty and producer longevity get too little weight in many considerations.
I agree with these thoughts, I have a Nikon M7 10x42 and 8x30, both
very good optically, and nice fit and finish.
From the original list I would stay with a proven brand, Nikon and Vortex
both have lots of high marks.
Jerry