Unless they have improved, I was unimpressed with the Wind River binos. I use the Nikon 8X42 ATB's and the new 12X50 Action EX extreme. Both give superb optics. I have used the ATB's on a hunt and they are superb in low light. Just a bit blurry on the edges and will distort just a bit when panning. For viewing in one spot then moving, superb. The Pentax WCF is also great, a bit larger/heavier but better colour rendition.
Resolution from both is right up there with the best. I am not joking. On Sunday, I was at a 1000m fun shoot. At that range, I could easily resolve the wild grass growing behind the backstop with the Action EX binos. There was even a pair of Zeiss binos there marked 10X42B Roof Prism with ribbed armour, quite heavy (no one knew which model this refered to). Anyways, the owner 'knew' his binos were great after taking them on some sheep hunts. Side by Side, he liked my Nikon's better.
The ATB's can be had for around $200 to 250 and the EX's around $150. I have the resources to buy whatever I want. With these Nikons, I see no need for hunting inside 1000m.
Jerry