I just got my hands on a pair of Vortex binos for Christmas, the Vulture 8.5x50, and they are a great bino. We're hunting mule deer now here in New Mexico, and one Mathews shooter is a Leica shooter, and you can't tell the difference. My Zeiss is blurry around the edges now, and they're only three years old. One of the hunters from Oregon has the same pair, and his is blurry around the edges.
We're comparing all the binos out here while hunting, and the best low light gather is the dang Steiner. You can see things through them three minutes before you can see through the Vortexs or the Zeiss. My Vortexs are holding their own in clarity, sharpness, and light gathering compared to the Zeiss, Leicas, and the Swarovski, but the Steiner is making all look bad. Like I said, these guys are carrying top of the line binos, they're sponsored shooters, and the Vortexs are comparing with the best of them. Look into the warrenty from Vortex, and you'll be surprised what you learn.