Based off others comments I went with:
Burris XTR II 4-20x50mm with SCR
https://www.burrisoptics.com/scopes/...cope-4-20x50mm
Aadmount for the scope mount, flip covers and throw lever.
http://shop.aadmount.com/main.sc
I'm a n00b and can't offer comparisons between the Burris/NF/Steiner
