Is there a big differance in on game performance with the extra 20FPS advantage of the Exomax? I was able to shoot the Vortex last week, and it was extremely accurate!! I am really interested in buying the Vortex (330 FPS) or am I better off spending the extra money and getting the Exomax (350FPS). The majority of my hunting will be Whitetail Deer. Thanks for any help!!