I used to think my Leupold LPS 3.5 x 14 with Leica glass was the best low light scope. Until my buddy bought a Zeiss Victory Divari. This scope was king in my eyes for low light. I have never looked through a S & B Polar, but would like too.
Buy my "NIB" Zeiss Victory HT 2.5-10X 50mm with the #06 NON-illuminated reticle & it will show up your buddies Diavari.
