Bushnell elite...iirc. They boasted the highest light transmission at one point. 94% on one of their models. Have several
Bushnell Elite 4200 are great hunting scopes for sure.
But not in the same "league" as the S&B Polar or the Zeiss Victory HT when it comes to low light performance. (these will have at least 50mm OBJ lens' of course)