Looking at going with a Leupold VX-3 4.5 X14 LR with the B&C reticle. Is the 50 MM obj worth the xtra money & weight added to the scope over the 40 MM? I haven't bought a new scope in awhile ,so is the VX-3 difference between the older VX-III really discernable? I'm leaning to the 40MM this time. Any help would be appreciated.