I have used 4x, and 6x fixed mostly on my maim bunting riflrs for years, Leupold M8's.
The last five or so I have been shooting a Leupold VX-R 1.25- 4x and just love it , very excellent low light scope .
The deer I shot last fall was almost at the end of legal light , about ten minutes left, 125 yards .
Cat

scopes are cool, but slings 'n' irons RULE!