I have grabbed up a vortex Sonoran 4-12x44 only to be disappointed every time with it holding zero. I paid $200 for a Vortex Diamondback 3-9x40 in 2013 and I had it on a 7mm Rem mag, a couple 45-70s, a couple 450 bushmasters, a couple 12ga slug guns, a .270, .308 and probably something else...