Just mounted a 2-7 Viper yesterday, comparing with others this rainy Maine morning. Looking into dark woods at 50-75 yds.
2-7 Viper as good optically as 2-7 VX-I Leupold
, Viper has much more scope showing around edges.
3-9x40 Redfield has much brighter image at 7x than either, would have left it on if it fit the rifle better.
I would buy another Redfield before the Viper I think, though I would like to compare 2-7's head to head.
1.8-5.5x38 Zeiss Conquest blows all these away, though longer and heavier.