Hello all! I just purchased a Remington 700 SPS tactical .308. Right now I have a Burris Fullfield II 3.5x-10x50 LRS on it. I'd like to get something with a bit better glass and a bit more magnification. Right now I'm looking at the Burris MTAC 4.5-14x42 for $550, the Vortex Viper HS 4-16x50 for...