I like the "one size does not fit all" post.
If you read through the space.com website it will mention how older folks have pupils that don't widen as much as younger people.
And how eye-glass wearers need to use care in selecting bino.
I have a now-ancient pair of Nikon 9x25 5.6° - these are compact, light weight and are good for travel.
However, the field of view is very small - it's not good for looking at Saturn, etc. because the viewed object bounces around too much - but we have enjoyed looking at animals such as sea lions and bears.
I keep them in the glove compartment or backpack.
But I'm going to look into something with less magnification and a greater field of view - and perhaps better clarity.
I went through this review and search process about ten years ago and decided to just settle on what I currently have.
Technology improves with time as has the budget, so maybe I'll add a second pair.