So far i have a savage 12 flv .223 threw a new A5 clone stock on it. i have a bushnell 3200 elite 10x40 mil dot on it now when i save up the funds want to buy a better optic. what is the deciding factor between leupold, IOR, nf, and us optics. mostly target shooting maybe some small game hunting and varminting. maybe shooting about 1000yds max. any recommendation?