I retired a Bushnell 4200 Elite 6-24x50 FFP mil/mil, replacing it with a Vortex Viper PST 4-16x50 FFP mil/mil. It was a notable improvement in image quality and the difference in turrets was a BIG improvement.
The 4200 turrets are "mushy", IMO, when changing elevation or windage while the Viper PST is sharp and distinct....and you gotta love the zero stop on the elevation adjustment.
The Viper PST has an illuminated reticle but I find no need to use it unless I'm shooting in a dawn/dusk situation.
Two years ago, I had the chance to take a Precision Rifle course and used the Viper PST while doing so. I had purchased it just a few months prior, zeroed it at the range, and had about 100 rounds down range using it. Needless to say, I made countless windage and elevation adjustments during the 4 day course. Every time I dialed the turrets back to their zero positions, bullet impact was right back on the bull at 100 yards.
The next scope I purchase will be a Vortex, no doubt about it.