I've owned both and I say go with whatever feels/looks best on your rifle. I really love the sight picture of the 3x9, but that 2x7 is plenty. I carried a 2x7 on a javelina hunt several years ago. I emptied my rifle and held on some cattle twice as far as I would ever consier shooting. We're talking 800 yards or more. Now cattle are bigger than deer, but even at 6x, I was able to hold on vitals just fine. The reticles didn't cover half the animal. Right then I decided that I would never need anything more for the hunting I intend on doing - basically 400 yards and in. The scope may work even futher, but I wouldn't. IMO, a VX-II in 2x7 is one great all-around scope when considering a variable.
