Hi 300,
I have a couple of Leupolds on my stalking rifles, never had cause to doubt them. Take a look at the photos from my Polish trip. In particular the night shot. Snow on the ground IS a help, but 10.30 ish with just the moon. How late do you want to shoot? There may be some perk to S&B, but how much perk for how much ££££'s I couldn't say.
I'm sure you will be happy with the S&B, and if you doubt the ability of the Leupold, it will never be as good, in your eyes at least.
Kind regards, and enjoy the search,
Mark