Had some vipers for several years now , i like them , have compared them to my brothers leupold binos cant recall what model they were but similar price range and thought my vipers were noticleably brighter at least to my eyes anyway, and definitely had a larger field of view. So yeah i rate them, the only issue i have had is having to put some tape round the barrel where the lens caps are attached to stop the lens caps from sliding off. Cheers
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