For optical clarity and brightness (these are in order to what I see with my eyes working in sport optics EVERY single day) --Swaro, Kahles, Cabela's Instinct, Raazor, Zeiss, Leupold, Sightron, Nightforce, Viper, Burris.

Yes, I put NF that far down the list. The Instinct is the brightest and clearest scope I own and I have a really good sampling from the list above, even including the NF NXS.