I suggest Leupold, in order to receive the absolute stellar unmatched customer service and warranty.
If you want a Leupold VX-III in 3.5-10x 40mm that's cool too, honestly I cant see the need for anything above the VX-II in 3-9x 40mm for any caliber rifle.
I don't recommend any of the others, since Leupold give me all I need and more. Well worth the money, no comparison.
I also buy older used Leupold's Vari-X II & III's very cheap with complete confidence and have had some repaired or replaced for brand new ones when I send them in for repair.
yooper77