I think I have (3) 1-4 Leupolds, 2 of which have coarse crosswires and adjusted for zero parallax at 75 yards. Both my No 1 Rugers (a .308 1B and a 7X57 1A) have 1 1/2- 5 Leupolds. My 700 XCR/CTR .223 has a 1.75 - 6 Leupold. I recently put a Burris LPVO 1-6 on one of my AR's. The rest of my hunting rifles tend to have 2 1/2 - 8's with a few 3 - 9's thrown in the mix.
As mentioned above, having a rifle that fits and handles well and having the scope mounted correctly relative to your size and shape and the eye relief of the scope is the biggest part of the equation. For fast shooting at close range I would prefer a quality vixed 6X set up properly over a lower power scope of lesser quality set up wrong for me.
