Bruce:
Here is a review of "Big Eyes".
http://www.24hourcampfire.com/big_eyes.html
I have the Minox 15x58ED binocular, and they are real nice, and are very close to the Minox
15x56, which is the current model. I have not tried any of the others, but I'm sure
the Nikon is priced for value.
The best 15x56 models currently available and most popular, would be the Swaro.
15x56 SLC, and the Vortex Kaibab 15x56. These are all worth owning, and the price
of admission changes along the way.
I recently got a budget priced model in this size, and that is the Celestron 15x70 Skymaster.
They are an econo. astro binocular and I have them tripod mounted, and enjoy watching
wildlife over a mile away from my window. Clearly not up to the quality of the others mentioned, but under $70.
Jerry