for those of you new to Rokslide, you may have missed one of our best articles on choosing optics. Written by Matt Cashell back in 2012, I still find it helpful to read again. He covers exit pupil, color transmission, contrast and more.
We're lucky to have Matt on staff to share his knowledge. If you're trying to learn more about choosing optics, give it a read.
What are we looking for? - Rokslide
There's also a part II "What We're Not Looking For." here
What We AREN'T Looking For - Rokslide